Abstract: Disclosed are oxadiazole compounds and pharmaceutically acceptable salts thereof. The compounds and pharmaceutically acceptable salts thereof are specifically suitable for the treatment of neurological diseases such as epilepsy.

Abstract: A method of Mission Critical Push to Talk (MCPTT) service performed by a mobile terminal includes: generating, at the mobile terminal, a group call announcement for off-network Mission Critical Push to Talk (MCPTT) service, the group call announcement for off-network MCPTT service including information of a period of the group call announcement for off-network MCPTT service; controlling a transceiver to periodically transmit, to one or more mobile terminals, the group call announcement for off-network MCPTT service based on the period; in response to the transmitted group call announcement for off-network MCPTT service, receiving a response from the one or more mobile terminals; and establishing, based on the response from the one or more mobile terminals, a group call with the one or more mobile terminals by setting a direct wireless communication with the one or more mobile terminals.

Abstract: A method for transmitting packets by a transmitter in a wireless communication network and retransmitting the packets not received correctly by receivers is discussed. The method includes transmitting the packets to at least two receivers, receiving reception acknowledgement response signals including ACK or NACK signals for the packets transmitted to the receivers, analyzing patterns of the received reception acknowledgement response signals in accordance with a number of the ACK or NACK signals, differently index coding the packets which are not received correctly by each receiver, and retransmitting the index-coded packets.

Abstract: A method of Mission Critical Push to Talk (MCPTT) service performed by a mobile terminal includes: generating, at the mobile terminal, a group call announcement for off-network Mission Critical Push to Talk (MCPTT) service, the group call announcement for off-network MCPTT service including information of a period of the group call announcement for off-network MCPTT service; controlling a transceiver to periodically transmit, to one or more mobile terminals, the group call announcement for off-network MCPTT service based on the period; in response to the transmitted group call announcement for off-network MCPTT service, receiving a response from the one or more mobile terminals; and establishing, based on the response from the one or more mobile terminals, a group call with the one or more mobile terminals by setting a direct wireless communication with the one or more mobile terminals.

Abstract: Provided is a method for retransmitting received data using index coding and statistical characteristics in a method for transmitting packets, by a transmitter, to at least two receivers in a wireless communication network and retransmitting packets which are not received correctly by each receiver, wherein the transmitter receives a reception acknowledgement response signal for the packets transmitted to the receiver and analyzes received patterns of the reception acknowledgement response signals transmitted from the receiver to differently perform index coding for each received pattern on the packets which are not received correctly by the receiver and retransmit the index-coded packets. According to the exemplary embodiment of the present invention, it is possible to effectively reduce a retransmission frequency of the packets which are not received correctly and a channel use frequency on communications and effectively use limited radio resources.

Abstract: The present invention relates to a system for providing traffic information using augmented reality, and comprises: an AR server for providing a virtual image which is obtained by processing transfer information on transfer locations at stops for transportation means and information according to the transportation means, using characters and graphics; and a personal portable communication device which displays the virtual image received from the AR server while overlapping the virtual image on a real-captured image of a transfer location obtained through a camera.

Abstract: A method and apparatus enhances a location update success rate in a mobile communication terminal. The method includes trying the location update, determining whether a reject cause is a major cause when the location update is rejected, retrying the location update using a current location indicator when the reject cause is the major cause, and retrying the location update using a different location indicator when the retried location update is rejected.

Abstract: The present invention relates to a system for providing traffic information using augmented reality, and comprises: an AR server for providing a virtual image which is obtained by processing transfer information on transfer locations at stops for transportation means and information according to the transportation means, using characters and graphics; and a personal portable communication device which displays the virtual image received from the AR server while overlapping the virtual image on a real-captured image of a transfer location obtained through a camera.

Abstract: A MultiBand-MultiMode (MBMM) wireless communication apparatus for performing seamless wireless communication by supporting Inter-Radio Access Technology (RAT) handover between communication networks according to different access types is provided. The apparatus includes a first Radio Frequency (RF) unit accessing a first wireless network, a second RF unit accessing a second wireless network having a different access type than the first wireless network, an interface unit connected to a target electronic device, and a switching unit connected to both the first and second RF units. The switching unit connects at least one of the RF units to the interface unit for communicating with the target electronic device. The first RF unit selects one of the RF units according to a camping order of the RF units or according to signal receiving conditions of the RF units, and controls the switching unit to connect the selected RF unit to the interface unit.

Abstract: A method and apparatus enhances a location update success rate in a mobile communication terminal. The method includes trying the location update, determining whether a reject cause is a major cause when the location update is rejected, retrying the location update using a current location indicator when the reject cause is the major cause, and retrying the location update using a different location indicator when the retried location update is rejected.