Abstract: The present disclosure provides a system for wireless positioning system including a collection unit for collecting a plurality of CIR data and distance data between a plurality of anchor terminals and the mobile terminal, when the mobile terminal communicates with the plurality of anchor terminals installed in a space for performing positioning of the mobile terminal; a pre-processing unit for generating a plurality of pre-proceed data by pre-processing the plurality of CIR data; a first learning unit for learning a first artificial neural network based on the plurality of pre-processed data and the distance data; an analysis unit for analyzing the first artificial neural network to select a plurality of positioning critical data used for positioning of the mobile terminal among the plurality of pre-processed data; and a second learning unit for learning a second artificial neural network based on the plurality of positioning critical data and the distance data.

Abstract: The present invention relates to a device and a method for configuring the topology of a UAV network having a plurality of unmanned air vehicles, the device and the method using the current location, moving speed, and movement direction of respective unmanned air vehicles to predict the locations of the unmanned air vehicles, and predicting a topology enabling an optimum network to be configured in consideration of meteorological influence and link quality, and thus a more stable UAV network can be configured.

Abstract: Disclosed are a method and a device for accounting for virtual assets. The device includes a receiver for receiving log data including a plurality of transaction recording data from a virtual asset exchange server; a transaction analyzer for extracting transaction recording data included in the log data, and allocating an account item and a transaction classification item to the transaction recording data, with reference to a predetermined transaction analysis table; and an accounting unit for journalizing the transaction recording data based on the account item and the transaction classification item to create journalized data.

Abstract: The present invention relates to a method and apparatus for TDOA wireless positioning, has an effect of reducing positioning errors by reducing TDOA errors using destructive interference of multiple anchor nodes by dividing four or more anchor nodes into sets of three or more anchor nodes and by estimating a position of a tag node using TDOA of each set, and has an advantage of reducing the size and weight of the tag node since separate hardware is not required.

Abstract: The present invention provides an augmented reality service providing device, including: a sensing unit to photograph an object and to measure a current position of a mobile terminal; a communication unit to measure a communication distance between the mobile terminal and the object; a control unit to control to repeat a plurality of times the measurement of the current position and the communication distance while the mobile terminal is moving; a calculation unit to calculate an estimated position of the object based on the current position and the communication distance measured repeatedly a plurality of times; and a display unit to display virtual information on the object on the estimated position of the object.

Abstract: The present invention provides an augmented reality service providing device, including: a sensing unit to photograph an object and to measure a current position of a mobile terminal; a communication unit to measure a communication distance between the mobile terminal and the object; a control unit to control to repeat a plurality of times the measurement of the current position and the communication distance while the mobile terminal is moving; a calculation unit to calculate an estimated position of the object based on the current position and the communication distance measured repeatedly a plurality of times; and a display unit to display virtual information on the object on the estimated position of the object.

Abstract: The present invention relates to a method and apparatus for TDOA wireless positioning, has an effect of reducing positioning errors by reducing TDOA errors using destructive interference of multiple anchor nodes by dividing four or more anchor nodes into sets of three or more anchor nodes and by estimating a position of a tag node using TDOA of each set, and has an advantage of reducing the size and weight of the tag node since separate hardware is not required.

Abstract: Provided is a method and apparatus for wirelessly transmitting Universal Serial Bus (USB) application data by using an Enhanced Distributed Channel Access (EDCA) scheme that uses one or more Access Channels (ACs) having different priorities. The method includes receiving one or more USB application data from an USB application, dynamically assigning an AC through which the USB application data is to be transmitted, and transmitting the USB application data through the assigned AC.

Abstract: The present disclosure provides a method for managing buffers of a device for Universal Serial Bus (USB) communication in a wireless environment. The method includes determining respective current data storage levels of transmit buffers that store different types of data for USB communication; comparing the respective current data storage levels of the transmit buffers with corresponding respective predetermined threshold levels; and controlling an input rate or output rate of a first transmit buffer if it is determined based on the comparison that the first transmit buffer has a current data storage level that exceeds a predetermined threshold level.

Abstract: A node device using a TV white space (TVWS) includes a decision unit for comparing energy levels of a first sub-channel and at least one second sub-channel adjacent to the first sub-channel among a plurality of sub-channels with respect to a digital TV (DTV) channel including the plurality of sub-channels and deciding whether the DTV channel is an available channel, and a discovery unit for, if the DTV channel is decided as the available channel, discovering a beacon by scanning the first sub-channel in the DTV channel.

Abstract: A method of caching a content in a node in a content-centric network, includes receiving, from a content requester, a content request packet requesting a first chunk of the content, and setting a mark bit indicating whether the node is to cache the first chunk when the first chunk is received. The method further includes receiving, from a content provider, a data packet including the first chunk in response to transmitting the content request packet to the content provider, and caching the first chunk.

Abstract: A method of transmitting content to a content receiver and of receiving content from a content transmitted is provided. The method may include receiving, at a content transmitter, a content transmission request fragmenting a segmented content corresponding to the content transmission request into at least one frame, generating a header comprising a frame identifier for the at least one frame, and transmitting the at least one frame and the header to the content receiver.

Abstract: In a method for communicating among a plurality of nodes in a content-centric networking environment, each of a plurality of nodes selects at least one relay node based on topology information on neighbor nodes adjacent within 2 hops from itself. Each of the selected relay nodes determines whether itself is a publisher relay node. Each of the determined publisher relay nodes generates a multi-hop content announce (CA) message including content information of its own 1-hop neighbor nodes, and broadcasts the multi-hop CA message to the plurality of nodes through the selected relay nodes.

Abstract: The present invention provides a method and system for performing distributed channel sensing in which channel information is collected by performing channel sensing according to a channel sensing priority which is determined according to a relative position of a cell to which a wireless connection device belongs from among a plurality of cells which logically partition the zone of the wireless network, and thus the overhead of the channel sensing which is generated in a cognitive wireless multi-hop network environment is reduced, and the transmission failure which occurs when the wireless connection device detects frequencies is reduced.

Abstract: A location-based content-centric networking method for location-based content is provided. The location-based content-centric networking method may include: naming location-based content in such a manner that the name given to the location-based content includes a hierarchical prefix corresponding to information contained in the location-based content; and forwarding the location-based content based on prefix information of the location-based content.

Abstract: Provided is a method and apparatus for wirelessly transmitting Universal Serial Bus (USB) application data by using an Enhanced Distributed Channel Access (EDCA) scheme that uses one or more Access Channels (ACs) having different priorities. The method includes receiving one or more USB application data from an USB application, dynamically assigning an AC through which the USB application data is to be transmitted, and transmitting the USB application data through the assigned AC.

Abstract: The present disclosure provides a method for managing buffers of a device for Universal Serial Bus (USB) communication in a wireless environment. The method includes determining respective current data storage levels of transmit buffers that store different types of data for USB communication; comparing the respective current data storage levels of the transmit buffers with corresponding respective predetermined threshold levels; and controlling an input rate or output rate of a first transmit buffer if it is determined based on the comparison that the first transmit buffer has a current data storage level that exceeds a predetermined threshold level.

Abstract: A node device using a TV white space (TVWS) includes a decision unit for comparing energy levels of a first sub-channel and at least one second sub-channel adjacent to the first sub-channel among a plurality of sub-channels with respect to a digital TV (DTV) channel including the plurality of sub-channels and deciding whether the DTV channel is an available channel, and a discovery unit for, if the DTV channel is decided as the available channel, discovering a beacon by scanning the first sub-channel in the DTV channel.

Abstract: In a method for communicating among a plurality of nodes in a content-centric networking environment, each of a plurality of nodes selects at least one relay node based on topology information on neighbor nodes adjacent within 2 hops from itself. Each of the selected relay nodes determines whether itself is a publisher relay node. Each of the determined publisher relay nodes generates a multi-hop content announce (CA) message including content information of its own 1-hop neighbor nodes, and broadcasts the multi-hop CA message to the plurality of nodes through the selected relay nodes.

Abstract: Exemplary embodiments of the present invention relate to a method for generating a route between nodes in a network environment using TVWS (TV White Space). The network route generating method by PAN (Personal Area Networks) coordinator which can transmit/receive message with node existing in TMCTP (TVWS Multichannel Cluster Tree Personal area networks) through a plurality of channels belong to TVWS (TV white space), the method comprises: receiving a route search message from a SPC (Super PAN Coordinator) or an upper PAN coordinator, through a channel among the plurality of channels; and broadcasting the route search message, through the plurality of channels. According to exemplary embodiments of the present invention, a network route between nodes can be easily set using TVWS.