Abstract: Apparatus and method for multiplexing control information bits and data information bits into sub-frame symbols depending on the location of symbols carrying a reference signal (RS), to provide an estimate for the channel medium and enable coherent demodulation for signals carrying information bits. The control information bits include ACK or NAK and/or channel CQI bits. The ACK/NAK bits are placed with priority in symbols around the symbols carrying the RS, to allow for improved accuracy of the channel estimate, followed by the CQI bits when both ACK/NAK and CQI bits exist. Moreover, the sub-frame resources required to achieve the desired reception reliability for the control information depend on the operating conditions and can varied to minimize the associated control overhead.

Abstract: A method for allocating resources for transmission of an uplink Acknowledgement (ACK)/Negative ACK (NACK) used for indicating success/failure in reception of downlink transmission data by a base station in a mobile communication system. The resource allocation method includes determining a mapping rule between control channel elements constituting a downlink control channel and resources for ACK/NACK transmission; transmitting, to at least one User Equipment (UE), control information used for indicating to acquire the determined mapping rule and resources for ACK/NACK transmission allocated using the mapping rule; transmitting a downlink data channel though a predetermined scheduling operation; and transmitting the downlink control channel to the UE.

Abstract: A method and apparatus for measuring a distance in a wireless environment are provided, in which a first device transmits a distance measurement signal to a second device and receives at least one response signal for the distance measurement signal from the second device, matches the received response signal with a reference signal to detect an earliest response signal, and calculates a time taken from the transmission of the distance measurement signal to the second device and the reception of the response signal from the second device using a peak value of the matched reference signal.

Abstract: Disclosed is a method and system for initiating a Push-To-Talk over Cellular (PoC) session between PoC clients supporting various types of media. A PoC client performing Open Mobile Alliance-type multimedia communication service supports a plurality of media types and makes it possible to independently and more conveniently initiate a session irrespective of answer modes set according to media types when the answer modes according to the media types are not equal to each other.

Abstract: A focusing device for a beam projector which includes a casing; a lens holder having at least one lens which is movable forward or backward in the direction of the optical axis; a movable member located at a side of the lens holder to be movable parallel to the direction of the optical axis together with the lens holder; and a control knob located adjacent to the lens holder and rotatably coupled on the casing.

Abstract: An apparatus and a method for managing a spam number in a mobile communication terminal are provided. The method includes determining a spam index for each of at least one phone number using a reception record by phone number, and determining spam number registration or non-registration for each phone number depending on the spam index.

Abstract: Provided is an apparatus and method for saving power in a dual mode portable terminal that concurrently supports a cellular network and an unlicensed band network. The method includes, upon disassociating from an in-association Access Point (AP) of an unlicensed band network, measuring a Received Signal Strength Indicator (RSSI) from the AP during a predetermined time and calculating an average value of the RSSI; and comparing the calculated average value with a predetermined threshold value and deciding whether to perform a mode conversion between a low power mode and a general mode.

Abstract: Method and apparatus for transmitting/receiving an uplink pilot used for channel estimation and measurement of an uplink in an FDMA system. Pilot symbols are transmitted with different frequency mapping patterns in first and second pilot symbol intervals of one time slot interval including data symbol intervals and the inconsecutive first and second pilot symbol intervals which have a shorter length than the data symbol intervals. As a result, interpolation of a frequency domain during channel estimation is not necessary, and can correctly obtain channel-estimated values of a frequency at which data is transmitted, in a fast time-varying channel environment.

Abstract: A mobile communication terminal and text-to-speech method. The mobile communication terminal includes a display unit for displaying at least one object on a screen; a controller for identifying a depth of an activated object on the screen and finding a speech data set mapped to the identified depth; a speech synthesizer for converting textual contents of the activated object into audio wave data using the found speech data set; and an audio processor for outputting the audio wave data in speech sounds. As a result, textual contents of different objects are output in different voices so the user can easily distinguish one object from another object.

Abstract: Disclosed is an inter-entity coupling method for protecting content in a broadcast environment including a broadcast network and a terminal, the broadcast network having a Broadcast Service Application (BSA), a Broadcast Service Distribution (BSD), and a Broadcast Service Management (BSM), the inter-entity coupling method including performing, by the terminal, a registration process for obtaining a group key for the terminal; after the registration process is completed, performing, by the terminal, a service joining process for requesting service joining, and receiving, by the terminal, a Rights Object (RO) about the content from a message, which is received in response to the request, based on the obtained group key; obtaining a traffic key by using the RO, if a traffic key message is received after the service joining process is completed; receiving encrypted content in the terminal; and decrypting the encrypted content by using the traffic key.

Abstract: A method for requesting presence information from a presence source by a presence server is provided. The method includes receiving, from a presence source, media feature tag value corresponding to presence information published by the presence source, respectively; requesting specific presence information from the presence source using a specific media feature tag value from among the media feature tag values; transmitting a publication rule for controlling publication operation of the presence source; and receiving, from the presence source, the specific presence information published by the presence source, according to the publication rule. Each of the media feature tag value represents a type of presence information published by the presence source.

Abstract: An apparatus and a method for channel encoding/decoding in a communication system are provided. The apparatus and the method generate LDPC-encoded blocks with various lengths from an LDPC code with fixed length in a communication system using a Low-Density Parity-Check (LDPC) code. The apparatus and the method perform shortening using a predetermined number of shortened bits and perform LDPC encoding. The apparatus and the method apply predetermined rules according to the predetermined number of shortened bits and determine the number of bits to be punctured, and perform puncturing based on the determined number of punctured bits.

Abstract: Disclosed is a method and an apparatus for recognizing characters using an image. A camera is activated according to a character recognition request and a preview mode is set for displaying an image photographed through the camera in real time. An auto focus of the camera is controlled and an image having a predetermined level of clarity is obtained for character recognition from the images obtained in the preview mode. The image for character recognition is character-recognition-processed so as to extract recognition result data. A final recognition character row is drawn that excludes non-character data from the recognition result data. A first word is combined including at least one character of the final recognition character row and a predetermined maximum number of characters. A dictionary database that stores dictionary information on various languages using the first word is searched, so as to provide the user with the corresponding word.

Abstract: An apparatus and method for improving the reception performance of a Mobile Station (MS) in a multiple antenna system are provided. In an apparatus of a Base Station (BS) in the multiple antenna system, upon receipt of a request for interference cancellation for a first MS serviced by a neighbor BS, a channel estimator estimates a channel from the first MS and a channel from a second MS serviced by the BS. A beam coefficient generator generates a first beam coefficient based on channel estimates of the first and second MSs and a second beam coefficient based on the channel estimate of the second MS. An interference cancellation decider determines whether to perform interference cancellation for the first MS using the first and second beam coefficients.

Abstract: An apparatus and method for providing incoming and outgoing call information in a mobile communication terminal. A display unit displays detailed incoming/outgoing call information integrated for a particular phone number. A memory stores an incoming/outgoing call list according to an incoming/outgoing event. A controller controls an operation for adding the detailed incoming/outgoing call information to an associated phone number item of the incoming/outgoing call list when the incoming/outgoing call event occurs, and controls an operation for displaying the detailed incoming/outgoing call information integrated for the particular phone number selected from among phone numbers of the incoming/outgoing call list. The detailed incoming/outgoing call information mapped to the same phone number can be viewed at one time by integrating and providing the incoming/outgoing call information.

Abstract: Methods and apparatus are provided for transmitting and receiving data in a communication system with a plurality of antennas. Data and a first pilot are generated. The first pilot is transmitted at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is with the generated data, in every transmission time interval of the data. A second pilot is generated. The second pilot is transmitted at predetermined second positions in the time domain and the frequency domain, in a transmission time interval that is predefined by a transmitter and a receiver.

Abstract: A method for sharing a file between a control point and a media server in a DLNA system, and a system thereof are provided, in which the control point captures a photo, determines a similarity between a facial image included in the captured photo and a facial image file corresponding to at least one media server, compares the similarity with a pre-stored value, and if the similarity is greater than or equal to the pre-stored value, transmits a Uniform Resource Identifier (URI) representing a position at which the photo is stored to the media server, and the media server accesses the URI received from the control point and receives the photo using the URI.

Abstract: Provided is a method and a terminal for executing a function of a terminal according to data transmitted and received through a human body, which includes detecting a touch in a human body communication signal input unit, wherein the human body communication signal input unit is in a human body communication key mode; determining a number detected touches and determining a number pulse signals transmitted during a time in which the touch is maintained when the touch is detected; and executing a function corresponding to the human body communication signal.

Abstract: A method is provided for supporting mobility of a Mobile Node (MN) in a multi-hop Internet Protocol (IP) network, in which an MN that has moved from a source Personal Area Network (PAN) to a target PAN, sends a Router Solicitation (RS) message with an option for requesting its profile to a gateway of the target PAN, and receives a Router Advertisement (RA) message from the gateway in response to the RS message. The RA message includes a home prefix of the MN as the requested profile. The method supports mobility of MNs, enables unicast communication, and facilitates efficient use of the network.