Abstract: The present invention relates to antibody-drug conjugates (ADCs) wherein a plurality of active agents are conjugated to an antibody through at least one branched linker. The branched linker may comprise a branching unit, and two active agents are coupled to the branching unit through a secondary linker and the branching unit is coupled to the antibody by a primary linker. The active agents may be the same or different. In certain such embodiments, two or more such branched linkers are conjugated to the antibody, e.g., 2-4 branched linkers, which may each be coupled to a different C-terminal cysteine of a heavy or light chain of the antibody. The branched linker may comprise one active agent coupled to the branching unit by a first branch and a second branch that comprises a polyethylene glycol moiety coupled to the branching unit. In certain such embodiments, two or more such branched linkers are conjugated to the antibody, e.g.

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery. The positive electrode includes a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high porosity and high specific surface area. Therefore, when the sulfur-carbon composite is applied to a battery, the battery shows a reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a sulfur-carbon composite as a positive electrode active material. The sulfur-carbon composite includes a porous carbonaceous material having a high specific surface area, and the total pore volume in the carbonaceous material and a volume of pores having a specific diameter are controlled to specific ranges. Also disclosed is a lithium-sulfur battery using the sulfur-carbon composite. The lithium-sulfur battery shows reduced initial irreversible capacity and improved output characteristics and life characteristics.

Abstract: A positive electrode for a lithium-sulfur battery is provided. The positive electrode includes a positive electrode active material comprising a first and second sulfur-carbon composites respectively comprising a first and a second carbonaceous materials having a different specific surface area and pore volume from each other, and provides reduced initial irreversible capacity and improved output characteristics and life characteristics of a secondary battery.

Abstract: A method for preparing a sulfur-carbon composite including a step of pretreating a carbon material is provided. The method is capable of removing water and other impurities from the carbon material effectively, and the sulfur-carbon composite obtained by the method used as a positive electrode active material of a lithium-sulfur battery provides improved sulfur supportability and over-voltage performance of the lithium-sulfur battery, reduced initial irreversible capacity of the positive electrode active material, and improved output characteristics and life characteristics.

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.