Patents by Inventor Chun Woo Lee

Chun Woo Lee 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: 8588104
    Abstract: Certain embodiments of the present disclosure may allow for transmitting location information from a mobile station to a base station. The mobile station can determine differential location information (DLI) of the mobile station relative to an absolute location of the mobile station and transmit the DLI to the base station. The base station can receive DLI from the mobile station, the DLI indicating a location of the mobile station relative to an absolute location, and adjust parameters of the mobile station based, at least in part, on the DLI.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: November 19, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Jong Ro Park
  • Patent number: 8571473
    Abstract: An embodiment of the present invention is a technique for short-range ad-hoc mode communication. An ad-hoc mode is configured for a first mobile station (MS) operating in an ad-hoc network under a broadband wireless standard. An ad-hoc mode communication is acquired having a simplified communication protocol of the broadband wireless standard. A second MS is communicated with using the ad-hoc mode communication.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: October 29, 2013
    Assignee: Qualcomm Incorporated
    Inventor: Chun Woo Lee
  • Publication number: 20130279389
    Abstract: Techniques for signaling a mobile communications device in a special operating state that data bursts contain messages relevant to the special operating state. The signaling may be implemented using one or more bits in a frame control header (FCH). As a result, the mobile communication device may be decode the FCH first and decode data bursts only if there is an indication the data bursts contain a relevant message. Power savings may be achieved at the mobile communications device by avoiding decoding data bursts with no relevant messages.
    Type: Application
    Filed: June 18, 2013
    Publication date: October 24, 2013
    Inventors: Jong Ro Park, Chun Woo Lee, Kyoung Cheol Oh
  • Patent number: 8560908
    Abstract: Certain embodiments of the present disclosure propose techniques for improving automatic repeat request (ARQ) feedback messages to reduce unnecessary transmissions by notifying the transmitter of the last acknowledged block in the ARQ feedback message.
    Type: Grant
    Filed: October 31, 2009
    Date of Patent: October 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Quanzhu Duan, Chun Woo Lee, Jong Ro Park
  • Patent number: 8526390
    Abstract: Methods and apparatus for allocating, modifying, and terminating a fixed data region (termed “sticky region allocation”) in an orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) frame are provided. With sticky region allocation, the sticky region may be negotiated during the establishment of a connection between a base station and a user terminal, and a single MAP information element (MAP IE) may inform the user terminal of the location of the sticky region. Then, a user terminal can receive/send data bursts for a certain connection in multiple OFDM/OFDMA frames without needing a MAP IE for locating each burst in subsequent frames. Accordingly, the size of the control overhead, such as the downlink (DL) and uplink (UL) MAP messages, may be reduced. The reduced control overhead may increase the frame resources available for data traffic and thus, may boost the overall efficiency and performance of OFDM/OFDMA wireless systems.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: September 3, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Doo Seok Kim, Guangming Carl Shi, Chun Woo Lee
  • Patent number: 8498607
    Abstract: Techniques for signaling a mobile communications device in a special operating state that data bursts contain messages relevant to the special operating state. The signaling may be implemented using one or more bits in a frame control header (FCH). As a result, the mobile communication device may be decode the FCH first and decode data bursts only if there is an indication the data bursts contain a relevant message. Power savings may be achieved at the mobile communications device by avoiding decoding data bursts with no relevant messages.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: July 30, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Jong Ro Park, Chun Woo Lee, Kyoung Cheol Oh
  • Patent number: 8483041
    Abstract: Methods and apparatus for allocating a data region (termed “sticky region allocation”) in an orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) frame so that a user terminal can receive/send data bursts for multiple OFDM/OFDMA frames, rather than inserting a MAP information element (MAP IE) for each user terminal in every frame, are provided. In this manner, the size of the control overhead, such as the downlink (DL) and uplink (UL) MAP messages, may be reduced. The reduced control overhead may increase the frame resources available for data traffic and thus, may boost the overall efficiency and performance of wireless systems using OFDM/OFDMA.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: July 9, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Chun Woo Lee, Doo Seok Kim, Je Woo Kim
  • Patent number: 8443247
    Abstract: Embodiments of the present disclosure allow a HARQ transmitter to provide a receiver an indication of the protocol data units (PDUs) that should not be expected because they are part of a data burst that has been retransmitted a maximum allowable number of times. The indication message may contain a maximum serial number contained in the data burst that has reached the maximum number of retransmissions, or the serial number of a first PDU in the next data burst.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: May 14, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Quanzhu Duan, Chun Woo Lee, Jong Ro Park
  • Publication number: 20130095840
    Abstract: Certain embodiments of the present disclosure present methods and apparatuses for enhancing the dedicated ranging procedure. Certain embodiments improve probability of correct reception of a ranging code from a mobile station by accumulating two or more copies of the ranging code received from the MS on two or more different frames in a transmit opportunity. Certain aspects improve probability of correct reception of the ranging code by modifying timing of uplink transmission.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 18, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Jong Ro Park, Kyoung Cheol Oh, Nitin Pant, Kuo-Chun Lee
  • Patent number: 8411638
    Abstract: Certain embodiments provide techniques for background scanning in a wireless communication device receiving signals from multiple base stations using a background scanning processor separate from a receive processor. The techniques generally include buffering raw signal data from multiple base stations, forwarding the raw signal data to a receive baseband processor for decoding data from a first one of the base stations that is currently designated as a serving base station with an active connection to the wireless communications device, forwarding the raw signal data to a background scanning processor, separate from the receive baseband processor, and generating channel characteristics corresponding to the multiple base stations with the background scanning processor without interrupting the exchange of data with the first base station designated as the serving base station.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: April 2, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Shan Qing, Tom Chin
  • Patent number: 8406342
    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of a response message expected to be transmitted in response to a previously transmitted message. Example expected response messages include clear to send (CTS) messages transmitted in response to request to send (RTS) messages and positive acknowledgement (ACK) messages transmitted in response to messages with data payloads.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: March 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Jong Hyeon Park
  • Patent number: 8392811
    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. A-priori bit values may be extracted from various messages, such as DL-MAP, UL-MAP, RNG-REQ, and BW-REQ messages.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: March 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Jong Hyeon Park
  • Patent number: 8385261
    Abstract: Methods and apparatus for setting the connection identifier (CID) mask length of a Hybrid Automatic Repeat-Request (HARQ)-MAP or a SUB-MAP pointer information element (IE) in a compressed downlink map (DL-MAP) of an orthogonal frequency-division multiple access (OFDMA) frame are provided in an effort to reduce the number of false indications in the CID mask, while also striving, as a secondary concern, to reduce the CID mask length. In this manner, an individual mobile station (MS) may not waste processing, battery power, or time interpreting a HARQ-MAP message or a sub downlink/uplink map (SUB-DL-UL-MAP) message that was not intended for this particular MS. For some embodiments where the CID mask length is set to be small, the control overhead (i.e., the size of the HARQ-MAP or the SUB-MAP pointer IE) may be decreased, and more of the OFDMA frame may be available for data traffic.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: February 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Patrick Lim, Tom Chin, Wei Zhang, Yu Wang, Chun Woo Lee, Fangqi Hu, Guangming Shi, Feng Guo, Ta Yan Siu, Doo Seok Kim, Jong Ro Park
  • Patent number: 8374286
    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of a response message expected to be transmitted in response to a previously transmitted message. Example expected response messages include clear to send (CTS) messages transmitted in response to request to send (RTS) messages and positive acknowledgement (ACK) messages transmitted in response to messages with data payloads.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: February 12, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Chun Woo Lee, Jong Hyeon Park
  • Patent number: 8259866
    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: September 4, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Tae Ryun Chang, Jong Hyeon Park, Ju Won Park, Bok Tae Sim, Chun Woo Lee, Je Woo Kim
  • Patent number: 8238280
    Abstract: Certain embodiments of the present disclosure allow data for a second connection to be exchanged while the second connection is in a low power state that overlaps with a listening interval of a first connection.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: August 7, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Patrick Lim, Yu Wang, Chun Woo Lee, Guangming Carl Shi, Jong Ro Park, Tom Chin
  • Patent number: 8210157
    Abstract: An exhaust gas recirculation system of an internal combustion engine where a cylinder head having an intake port and an exhaust port is coupled to a cylinder block, and a portion of an exhaust gas exhausted from the exhaust port is flowed into the intake port through a control valve, may include a recirculation gas gallery integrally formed at the cylinder head and communicated with the intake port, a control valve assembly including the control valve and communicated with the recirculation gas gallery, and at least a recirculation gas extracting unit that is communicated with the control valve assembly and the exhaust port.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: July 3, 2012
    Assignee: Hyundai Motor Company
    Inventors: Youngmin Sohn, Woo Tae Kim, Chun Woo Lee
  • Patent number: 8163394
    Abstract: Provided is an aluminum foil according to the present invention including: a primer coated layer (13) which is formed by depositing a primer coating liquid on a non-glossy surface of the aluminum foil (11), and drying the primer coating liquid deposited on the non-glossy surface of the aluminum foil at temperature of 20 to 110° C. to then cool the same at temperature of 0 to 20° C.; a mid-coat layer (15) which is formed by depositing the mid-coating liquid on the upper portion of the primer coated layer (13); and a two-coat layer (17) which is formed by depositing the coating liquid on the upper portion of the mid-coat layer (15), and plasticizing the coating liquid deposited on the upper portion of the mid-coat layer for three to five minutes at temperature of 60 to 430° C.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: April 24, 2012
    Inventor: Chun Woo Lee
  • Patent number: 8070572
    Abstract: The present invention relates to a fishing simulation method, a fishing simulation execution method, and a fishing simulator, and more specifically, to a fishing simulation method, a fishing simulation execution method, and a fishing simulator, in which a fishing activity procedure of detecting a fish school, gathering fish, and catching the fish can be realized in a three-dimensional virtual space of a computer, and a fishery environment and fishing activity simulated in the computer virtual space comes to be similar to a real fishery environment and fishing activity by simulating the behavior of the fish school, including an avoidance behavior of fish entities forming the fish school, responding to the movement of a fishing boat and a fishing gear, thereby enhancing learning effects on the fishery environment and the fishing activity.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: December 6, 2011
    Inventors: Chun Woo Lee, Ju Hee Lee, Gun Ho Lee
  • Patent number: 8000411
    Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: August 16, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Jong Hyeon Park, Bok Tae Sim, Je Woo Kim, Serguei A. Glazko, Sameer Nanavati, Ju Won Park, Chun Woo Lee, Tae Ryun Chang