Abstract: A P2P network system for reducing streaming delay in a peer-to-peer (P2P) network is provided. The P2P network system may include at least one peer, a seed server, and a tracker server that manages the network. The seed server provides content to the at least one peer. The peer, the seed server, and the tracker server operate such that the P2P network is managed based on the distance of each peer from the seed server.

Abstract: A method and apparatus are provided for accessing an Internet storage. In the method, access to a home storage is controlled, and an internet storage which has higher access reliability than the home storage is accessed, if the access to the home storage is not available. Accordingly, even when the home storage is not in operation, it is possible to obtain content and meta data of the content.

Abstract: A method and a device for switching a media renderer to another media renderer while a client performs streaming playback of content of a server are provided. Accordingly, a first client that performs streaming playback of the content transmits playback environment information and a URL of the content to the second client, and the second client transmits the received information and information about features of the second client to the server and requests the corresponding content which has the optimized format for the second client from the server. Therefore, a user can continue to watch the media content through a new media renderer in existing playback environment setting without additional manipulation.

Abstract: A method for transmitting data streams by a transmitter in a wireless communication system is provided. The transmitter performs Fourier transform for a data stream to generate a transformed stream. The transmitter repeats the transformed stream to generate a repeated stream. The transmitter maps the repeated stream on a plurality of subcarriers to generate a transmission signal. The transmitter transmits the transmission signal to a receiver. The plurality of subcarriers are selected by starting from a subcarrier having a predetermined index and hopping at a subcarrier interval.

Abstract: A method of transmitting a signal based on multi-stream CPDMA may include: allocating a plurality of data symbols to each of a plurality of data streams based on a frequency hopping pattern; applying a DFT function and a M-times repetition function to the data symbol allocated to the each of the plurality of data streams; applying a spectral weighting vector to the each of the plurality of data streams applying the DFT function and the M-times repetition function; and generating the signal based on the multi-stream CPDMA by performing an IDFT function and a cyclic prefix adding procedure with respect to the plurality of data streams to which the spectral weighting vector is applied, in which the spectral weighting vector is a vector for determining a frequency band in which the each of the plurality of data streams is used.

Abstract: A method and a device for switching a media renderer to another media renderer while a client performs streaming playback of content of a server are provided. Accordingly, a first client that performs streaming playback of the content transmits playback environment information and a URL of the content to the second client, and the second client transmits the received information and information about features of the second client to the server and requests the corresponding content which has the optimized format for the second client from the server. Therefore, a user can continue to watch the media content through a new media renderer in existing playback environment setting without additional manipulation.

Abstract: A method for detecting a radio signal in a wireless communication system is provided. According to the method, a wireless device measures an input signal received by a RF unit of. The wireless device eliminates a duplicated part between the input signal and a complex conjugate signal of the input signal to generate a filtered signal. The wireless device determines whether a target signal exists in the input signal based on the filtered signal.

Abstract: A method and a device for switching a media renderer to another media renderer while a client performs streaming playback of content of a server are provided. Accordingly, a first client that performs streaming playback of the content transmits playback environment information and a URL of the content to the second client, and the second client transmits the received information and information about features of the second client to the server and requests the corresponding content which has the optimized format for the second client from the server. Therefore, a user can continue to watch the media content through a new media renderer in existing playback environment setting without additional manipulation.

Abstract: A method and apparatus for processing moving image ancillary information, based on a script, is provided. The method includes receiving a user command for inputting ancillary information, where the ancillary information includes a script for a moving image being played. The method further includes storing the ancillary information input by a user, searching for and extracting the stored ancillary information during playback of the moving image, and outputting the extracted ancillary information to an image display screen using the script.

Abstract: Disclosed are a method and an apparatus for transforming a data symbol for interference avoidance. The method for transforming a data symbol includes; dividing a plurality of proper data symbols into a plurality of data streams; granting individual spectral weightings to the plurality of respective data streams; combining the plurality of data streams granted with the individual spectral weightings into one final data stream; performing inverse discrete Fourier transform (IDFT) of the final data stream; and adding a cyclic prefix (CP) to the plurality of data streams that is subjected to the IDFT, wherein each of the plurality of data streams granted with the individual spectral weightings include an improper data symbol.

Abstract: Disclosed are a method and an apparatus of interference alignment in a cellular network. The method of interference alignment in the cellular network includes: receiving, by a base station, an improper signal from a terminal; and decoding, by the base station, the improper signal based on an improper decoding vector, wherein the improper signal is a signal generated by only a modulation symbol corresponding to a real number value, the improper decoding vector is determined based on an improper precoding vector, and the improper precoding vector has only the real value and separates a real number space and an imaginary number space of a received signal.

Abstract: In an aspect, a method for transmitting data in a wireless communication system is provided. A wireless device determines a subcarrier and a subcarrier group to which a data sequence is allocated. The wireless device modulates the data sequence by a transmit filter to generate a data stream. A waveform of the transmit filter is determined based on the subcarrier and the subcarrier group. The wireless device generates a transmission signal based on the data stream. The wireless device transmits the transmission signal through the subcarrier. The transmission signal is cyclostationary.

Abstract: Provided is a capacitive touch sensor which includes a flat panel display for displaying an image and a touch sensor panel positioned on the flat panel display or embedded in the flat panel display. The capacitive touch sensor may include: a driving clock generator configured to generate time-periodic output signals with respect to a plurality of times, and apply the generated time-periodic output signals to the touch sensor panel and a receiver circuit unit; a driver configured to generate a driving signal of the touch sensor panel using a part of the output signals of the driving clock generator; and the receiver circuit unit configured to process noise contained in a signal received from the touch sensor panel, using the output signals.

Abstract: A method of transmitting a signal based on multi-stream CPDMA may include: allocating a plurality of data symbols to each of a plurality of data streams based on a frequency hopping pattern; applying a DFT function and a M-times repetition function to the data symbol allocated to the each of the plurality of data streams; applying a spectral weighting vector to the each of the plurality of data streams applying the DFT function and the M-times repetition function; and generating the signal based on the multi-stream CPDMA by performing an IDFT function and a cyclic prefix adding procedure with respect to the plurality of data streams to which the spectral weighting vector is applied, in which the spectral weighting vector is a vector for determining a frequency band in which the each of the plurality of data streams is used.

Abstract: Provided is gossip-based peer-to-peer service apparatus and a method for quickly establishing a partnership. A first node that desires to join a service receives partial view information of a second node from the second view that is participating in the service. In response to receiving the partial view information from the second node, the first node extracts one or more candidate nodes to establish a partnership with, and engages the candidate nodes in a temporal partnership.

Abstract: A method for allocating resources in a wireless communication system is provided. A base station receives a maximum transmission power from a first wireless device. The base station allocates a resource to the first wireless device based on a ratio of the maximum transmission power to a maximum available resource.

Abstract: An AV session restoration method and a control point for performing the same are provided. The method includes collecting AV session information, and restoring the AV session based on the collected AV session information when an error occurs in the AV session.

Abstract: A method for transmitting data streams by a transmitter in a wireless communication system is provided. The transmitter performs Fourier transform for a data stream to generate a transformed stream. The transmitter repeats the transformed stream to generate a repeated stream. The transmitter maps the repeated stream on a plurality of subcarriers to generate a transmission signal. The transmitter transmits the transmission signal to a receiver. The plurality of subcarriers are selected by starting from a subcarrier having a predetermined index and hopping at a subcarrier interval.

Abstract: A RF relay of a full-duplex generates a conversion matrix to belong to a null space of a channel matrix of an interference channel, generates a transmitting signal by converting a received signal using the conversion matrix, and then outputs the transmitting signal to a transmitting antenna. Therefore, an interference signal of an electromagnetic wave level (EM level) that can be generated while the transmitting signal passes through the interference channel can be canceled.

Abstract: An inter-home content sharing apparatus and method are provided. The inter-home content sharing apparatus includes a home network protocol stack which communicates with the home network devices according to a home network protocol; a remote storage controller which receives a request for sharing content from the home network devices through the home network protocol, connects to a remote storage to upload the content, and controls the remote storage to extract metadata of the content; and a message controller which controls transception of notification messages including sharing information on the uploaded content.