Abstract: The invention relates to a technology for detecting an abnormal signal using a filter for removing normal sound (or normal signals) around a sensor at normal times. The filter is provided to remove normal sound based on a denoising autoencoder learning technique for removing noise and used to determine whether field sound is an abnormal signal different from that of normal times. The filter is trained to pass normal sound, regarded as noise, to output a value of 0 and pass an abnormal signal without change. The filter is retrained by collecting only normal sound rather than abnormal signals in the field and then adding the collected normal sound to the existing training data. Therefore, even machine-learning nonexperts may easily and conveniently retrain the filter.

Abstract: According to one embodiment disclosed herein, an edge device may include: a sensor circuit capable of sensing a surrounding environment; and a processor, wherein the processor is configured to: obtain sensor data about the surrounding environment through the sensor circuit; identify a notification urgency of the sensor data by performing an inference based on a neural network graph via an artificial intelligence inference engine; and adjust a notification period of the sensor data depending on the identified urgency.

Abstract: Disclosed are a proxy device for a vehicle and a method of managing data from the vehicle. The managing method of the data from the vehicle includes receiving short message data from a vehicle proxy device through a lightweight message transmission protocol, receiving long message data from the vehicle proxy device through a web service message transmission method, and providing vehicle operation data and recording image data to a specific external server or a proxy device for a specific vehicle. The vehicle operation data correspond to the short message data, and the recording image data correspond to the long message data. Accordingly, the transmission efficiency of the data related to the vehicle may be improved.

Abstract: An aspect of the present invention provides a method for sensing a quality of a mobility link by a system for sensing a quality of a mobility link configured for evaluating a quality of a transmission-attempting link connected with a transmission-attempting node: computing link quality metric values of RSSI, LQI and EXT from transmission packets included in the message; computing a distribution ratio of a fuzzy set corresponding to each of the link quality metric values by applying the computed quality metric values to a quality fuzzy set having their respective quality factor indicators configured therein; computing fuzzy estimator values by classifying and aggregating the computed fuzzy distribution ratio of the quality fuzzy set into a first, a second and a third quality; and evaluating a quality of the transmission-attempting link based on the fuzzy estimator values.

Abstract: Provided is an apparatus and method for detecting a traffic flooding attack and conducting an in-depth analysis using data mining that may rapidly detect a distributed denial of service (DDoS) attack, for example, a traffic flooding attack, developed more variously and firmly from a denial of service (DoS) attack, perform an attack type classification, and conduct a semantic analysis with respect to the attack. The apparatus and method may support a system operation and provide a more stable service, by rapidly detecting a traffic flooding attack, classifying a type of the attack, and conducting a semantic analysis based on a prediction and analysis scheme of data mining.

Abstract: A virtual sensor generation apparatus of a sensor network sets a communication connection to a sensor node at a periphery of a smart device, generates a logical sensor corresponding to a physical sensor that is connected to the sensor node, generates a virtual sensor with the logical sensor, and provides an application service to a user using the virtual sensor.

Abstract: A sensor network management apparatus generates group specification information including requirements corresponding to an externally input service request, and forms a logical sensor network for the service request based on the generated group specification information. USN actuating information relating to USN (ubiquitous sensor network) resources included in the logical sensor network is generated, and USN resources are operated based on the USN actuating information.

Abstract: Provided is a device and a method for smart device and sensor node integrated application update, including an application program updating device including a generator to generate a package in a storage space by installing a sensing application, an extractor to extract an installation file and a profile of an application program interworking with the sensing application from the package, a recognizer to recognize a sensor node by referring to the profile, an installer to install the application program by transmitting the installation file to the sensor node, and an executor to execute the application program and the sensing application when the application program is installed in the sensor node.

Abstract: A thing device based on a thing searching browser and a mashup method between the thing devices. The smart device according to an exemplary embodiment may include a thing searching browser to search and register a thing; a communications entity manager to provide, through the thing searching browser, an Open Application Programming Interface (Open API) that supports the thing to be searched and connected, and generate a communications entity and a communications entity profile based on the searched thing; and an entity communications channel manager to set a communications channel between the searched thing and the communications entity and transmit and receive data.

Abstract: An IP packet forwarding server forwards an IP data packet between a user terminal and a machine-type communications (MTC) device allocated with a private internet protocol (IP). Such an IP packet forwarding server allocates a call identifier for connection between the user terminal and the MTC device, sets up a packet call to the MTC device and the user terminal using the call identifier, obtains packet forwarding information while setting up the packet call to the MTC device and the user terminal, and forwards an IP data packet between the MTC device and the user terminal using the packet forwarding information.

Abstract: Provided is a device and a method for smart device and sensor node integrated application update, including an application program updating device including a generator to generate a package in a storage space by installing a sensing application, an extractor to extract an installation file and a profile of an application program interworking with the sensing application from the package, a recognizer to recognize a sensor node by referring to the profile, an installer to install the application program by transmitting the installation file to the sensor node, and an executor to execute the application program and the sensing application when the application program is installed in the sensor node.

Abstract: A sensor terminal capable of personalizing an external physical device. The sensor terminal includes a control unit that recognizes and uses the external physical device as an internal device. The control unit may include a device object driver to manage a device object of one or more physical device and a profile of the device object; and a device service module to generate the device object of the physical device, and register the generated device object and the profile of the device object in the device object driver. Thus, the sensor terminal may recognize and use the external physical device as if it were the internal device.

Abstract: An apparatus for forecasting energy consumption includes a load data collection unit to collect low level data related to energy load data. The apparatus includes a filtering/attribute selection unit to eliminate duplicated attributes from attributes of low level data to produce an optimal attribute set. The apparatus includes a training unit produces a multi-class in which a plurality of single classes is hierarchically coupled in at least two levels and creates training data used for forecasting the energy consumption based on the produced multi-class. The apparatus includes a forecasting unit calculates the energy consumption to be forecasted on a basis of the real-time low level data, the multi-class and the training data. Therefore, it is possible to contribute to the progressive expansion and update of a cooling load forecasting system.

Abstract: A virtual sensor generation apparatus of a sensor network sets a communication connection to a sensor node at a periphery of a smart device, generates a logical sensor corresponding to a physical sensor that is connected to the sensor node, generates a virtual sensor with the logical sensor, and provides an application service to a user using the virtual sensor.

Abstract: A low-power method for media access control on a semi-linear sensor network with multiple sensor nodes, includes: sensing a channel after waking up from a sleep mode by an arbitrary transmission sensor node that has obtained data; and generating a long preamble including a number of element preambles and sending to a destination sensor node after said channel sensing. This method further includes: sending said data to said destination sensor node after completion of transmission of said long preamble; and identifying duty cycle information of said destination sensor node after completion of transmission of said data and adjusting the number of said element preambles according to said duty cycle information.

Abstract: Provided are a method and apparatus for controlling a shared memory, and a method of accessing the shared memory. The apparatus includes a processing unit configured to process an application program, a user program unit configured to execute a program written by a user based on the application program of the processing unit, a shared memory unit connected to each of the processing unit and the user program unit through a system bus and configured to store data interchanged between the processing unit and the user program unit, and a control unit configured to relay a control signal indicating whether the system bus, by which the data is interchanged between the processing unit and the user program unit, is occupied, and control connection of each of the processing unit and the user program unit with the system bus in response to the control signal.

Abstract: An IP packet forwarding server forwards an IP data packet between a user terminal and a machine-type communications (MTC) device allocated with a private internet protocol (IP). Such an IP packet forwarding server allocates a call identifier for connection between the user terminal and the MTC device, sets up a packet call to the MTC device and the user terminal using the call identifier, obtains packet forwarding information while setting up the packet call to the MTC device and the user terminal, and forwards an IP data packet between the MTC device and the user terminal using the packet forwarding information.

Abstract: A router relays sensing data between a field network including at least one sensor node and a plant network including a management system. The routing apparatus manages a routing table in which a next address and an output interface corresponding to an extension destination address of 6 bytes and an input interface are stored and transmits sensing data to another field network or a management system using the routing table.

Abstract: A wakeup-on-demand apparatus includes: a wakeup radio receiver (WRR) receiving a first radio signal to detect an address; and a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address.

Abstract: A low-power method for media access control on a semi-linear sensor network with multiple sensor nodes, includes: sensing a channel after waking up from a sleep mode by an arbitrary transmission sensor node that has obtained data; and generating a long preamble including a number of element preambles and sending to a destination sensor node after said channel sensing. This method further includes: sending said data to said destination sensor node after completion of transmission of said long preamble; and identifying duty cycle information of said destination sensor node after completion of transmission of said data and adjusting the number of said element preambles according to said duty cycle information.