Abstract: Disclosed is a technique for switching from a master node to a secondary node in a communication system. A method of a first communication node may comprise: adding the first communication node as a primary secondary cell (PSCell) to a second communication node through dual connectivity (DC); generating a first user plane path for smart dynamic switching (SDS) and a first instance for supporting the first user plane path according to a request from the second communication node; transmitting information on the first user plane path and the first instance to a terminal; receiving user data based on the first user plane path from the terminal as the first instance; and transmitting the user data to a core network using the first user plane path.

Abstract: There is provided a ferritic lightweight steel which contains 2.0 to 3.0 wt % manganese (Mn), 5.0 to 6.0 wt % aluminum (Al) and 0.1 to 0.3 wt % carbon (C) and has a tensile strength of 900 MPa to 1,108 MPa. The lightweight steel includes ferrite-austenite dual grains as a result of performing low-temperature tempering-induced partitioning (LTP) at 300° C. for 10 minutes after isothermal annealing.

Abstract: The present invention relates to a coating composition which is for a wiper blade and is for forming a coating layer for lowering the coefficient of friction of a wiper blade rubber base on glass, the coating composition including a lubricant additive and a solvent, wherein the lubricant additive is functionalized graphene capable of self-adhesion to the wiper blade rubber base.

Abstract: There is provided a ferritic lightweight steel which contains 2.0 to 3.0 wt % manganese (Mn), 5.0 to 6.0 wt % aluminum (Al) and 0.1 to 0.3 wt % carbon (C) and has a tensile strength of 900 MPa to 1,108 MPa. The lightweight steel includes ferrite-austenite dual grains as a result of performing low-temperature tempering-induced partitioning (LTP) at 300° C. for 10 minutes after isothermal annealing.

Abstract: Provided is an organic light emitting display device. The organic light emitting display device includes a substrate, an organic light emitting element on the substrate, a first encapsulation layer on the substrate and the organic light emitting element to seal the organic light emitting element, a second encapsulation layer on the first encapsulation layer, a particle cover layer on the second encapsulation layer corresponding to at least an organic light emitting element area, and a third encapsulation layer on the second encapsulation layer and the particle cover layer. The first encapsulation layer and the second encapsulation layer are different from each other in surface energy. When the particle cover layer is coated, the second encapsulation layer may have a higher spreadability. Thus, it is possible to improve scan mura or defect.

Abstract: Provided is an organic light emitting display device. The organic light emitting display device includes a substrate, an organic light emitting element on the substrate, a first encapsulation layer on the substrate and the organic light emitting element to seal the organic light emitting element, a second encapsulation layer on the first encapsulation layer, a particle cover layer on the second encapsulation layer corresponding to at least an organic light emitting element area, and a third encapsulation layer on the second encapsulation layer and the particle cover layer. The first encapsulation layer and the second encapsulation layer are different from each other in surface energy. When the particle cover layer is coated, the second encapsulation layer may have a higher spreadability. Thus, it is possible to improve scan mura or defect.

Abstract: A method for providing a voice service in a Wireless Local Area Network (WLAN) is provided. The method includes, detecting a change in the total number of voice calls that are sent and received over a wireless channel of the WLAN, setting channel access-related parameters in the WLAN upon detecting the change in the total number of voice calls, and providing a voice service by applying the channel access-related parameters to the voice and data services.

Abstract: An exposure mask includes a first transmission portion, a second transmission portion, and a blocking portion. The first transmission portion is configured to, when illuminated with light, transmit the light at a first energy level. The first transmission portion is disposed in association with formation of a first contact hole in an underlying layer. The second transmission portion is configured to, when illuminated with the light, transmit the light at a second energy level. The second transmission portion is disposed in association with formation of a second contact hole in the underlying layer. The blocking portion is configured to block the light, and is disposed in association with a boundary region between a first region and a second region of the underlying layer. The second transmission portion is further configured to enable the second contact hole to be formed deeper into the underlying layer than the first contact hole.

Abstract: An apparatus and method for providing/receiving a voice service in a Wireless Local Access Network (WLAN) system. In the voice service provision method, an Access Point (AP) generates a multiplexing voice data packet by performing a multiplexing operation on at least two voice data packets among received voice data packets, and performs a multicast operation of multicasting the multiplexing voice data packet to Mobile Stations (MSs) which should receive the at least two voice data packets.

Abstract: An apparatus and method for providing/receiving a voice service in a Wireless Local Access Network (WLAN) system. In the voice service provision method, an Access Point (AP) generates a multiplexing voice data packet by performing a multiplexing operation on at least two voice data packets among received voice data packets, and performs a multicast operation of multicasting the multiplexing voice data packet to Mobile Stations (MSs) which should receive the at least two voice data packets.

Abstract: A method for providing a voice service in a Wireless Local Area Network (WLAN) is provided. The method includes, detecting a change in the total number of voice calls that are sent and received over a wireless channel of the WLAN, setting channel access-related parameters in the WLAN upon detecting the change in the total number of voice calls, and providing a voice service by applying the channel access-related parameters to the voice and data services.

Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.

Abstract: Real-time Transport Protocol (RTP) voice packets in a terminal are handled by: checking whether a communication payload generated at an RTP transmitting side is a silence payload; and accumulating the silence payload instead of transmitting it upon the communication payload being the silence payload, and forming the RTP packet upon the communication payload being a voice payload or upon the number of accumulated silence payloads reaching a predetermined multi-frame limit.

Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.

Abstract: A method for establishing VoIP connection between a caller and a called party. Upon receipt of a first dial tone, the caller enters only the access code of the called party's central office. Then, VoIP call setup and a speech path are established between a remote gateway and the caller via a local gateway. A second dial tone is generated by the central office of the PSTN of the called party and this dial tone is relayed to the caller which prompts the caller to enter the telephone number of the called party to thereby establish communication between the caller and the called party.

Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.

Abstract: Real-time Transport Protocol (RTP) voice packets in a terminal are handled by: checking whether a communication payload generated at an RTP transmitting side is a silence payload; and accumulating the silence payload instead of transmitting it upon the communication payload being the silence payload, and forming the RTP packet upon the communication payload being a voice payload or upon the number of accumulated silence payloads reaching a predetermined multi-frame limit.

Abstract: A program on a firmware board is upgraded without cutting off power or resort to additional firmware writing hardware by providing the board with a flash memory which stores a file for production and a production-processing program for updating the file. A host computer produces the file for production by converting an execution file prepared in advance into the file for production. A personal computer (PC) receives the file for production downloaded from the host computer and stores the downloaded file for production in the corresponding region of the flash memory. The PC stores the file for production in the corresponding region of the flash memory using the production-processing program.

Abstract: A voice messaging service in a VoIP system performs a messaging service for an IP terminal in the VoIP communication system including the IP terminal; an IP controller integrates a VoIP voice mail box function using VoIP technology to provide a voice messaging service to a user of the IP terminal via an IP network. The IP controller function and the voice messaging system function are contained in one piece of equipment, and thus, when a receiving terminal is on the line or does not answer, a system call process status is immediately provided via voice guidance without a separate voice reproducing apparatus, thereby providing a convenient additional service to a terminal user.

Abstract: A VoIP call control apparatus in a PBX (Private Branch exchange) and a method thereof is capable of an effective charge management by differentiating bandwidth allocation according to a service level.