Abstract: Embodiments relate to laser welding methods, monitoring methods, and monitoring systems for a secondary battery. A laser welding method for a secondary battery includes performing laser welding on a positive electrode base having a thin-film shape in which a plurality of positive electrode base tabs are formed at a side, a negative electrode base having a thin-film shape in which a plurality of negative electrode base tabs are formed at a side, and a thin-film multi-tab to be joined to each of the positive electrode base and the negative electrode base, a welded portion in which the multi-tab is welded with the positive electrode base and the negative electrode base being melting-joined by using a laser such that a plurality of welding spots is formed on the welded portion.

Abstract: A vehicle seat reinforcement device includes a leg portion mounted on a floor panel, a seat cushion frame slidably mounted on the leg portion, and a load reinforcing structure connected between the leg portion and the seat cushion frame, wherein when a seat belt anchorage load is transferred to the seat cushion frame, the seat cushion frame is locked to the leg portion by the load reinforcing structure.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system are provided. The method includes determining whether a cell change from a first cell to a second cell is detected while waiting for a network connection request message, after an acquisition of a synchronization with a first base station associated with the first cell, determining, if the cell change is detected, whether a synchronization is acquired with a second base station associated with the second cell and whether the network connection request message is detected, initiating, if the network connection request message is detected after the synchronization is acquired with the second base station, a network entry procedure, and saving, if the network connection request message is detected before the synchronization is acquired with the second base station, the network connection request message in a buffer.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system are provided. The method includes determining whether a cell change from a first cell to a second cell is detected while waiting for a network connection request message, after an acquisition of a synchronization with a first base station associated with the first cell, determining, if the cell change is detected, whether a synchronization is acquired with a second base station associated with the second cell and whether the network connection request message is detected, initiating, if the network connection request message is detected after the synchronization is acquired with the second base station, a network entry procedure, and saving, if the network connection request message is detected before the synchronization is acquired with the second base station, the network connection request message in a buffer.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system is provided. The method includes determining whether a cell change from a first cell to a second cell is detected while waiting for a network connection request message, after an acquisition of a synchronization with a first base station associated with the first cell, determining, if the cell change is detected, whether a synchronization is acquired with a second base station associated with the second cell and whether the network connection request message is detected, initiating, if the network connection request message is detected after the synchronization is acquired with the second base station, a network entry procedure, and saving, if the network connection request message is detected before the synchronization is acquired with the second base station, the network connection request message in a buffer.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system is provided. The method includes determining whether a cell change from a first cell to a second cell is detected while waiting for a network connection request message, after an acquisition of a synchronization with a first base station associated with the first cell, determining, if the cell change is detected, whether a synchronization is acquired with a second base station associated with the second cell and whether the network connection request message is detected, initiating, if the network connection request message is detected after the synchronization is acquired with the second base station, a network entry procedure, and saving, if the network connection request message is detected before the synchronization is acquired with the second base station, the network connection request message in a buffer.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system is provided.

Abstract: In a system and method for handoff using a hybrid network, a wireless local area network (WLAN) terminal determines its own position information through communication with a code division multiple access (CDMA) base station and a global positioning system (GPS) satellite, and a cell mapping server obtains information about a WLAN cell where the WLAN terminal is currently located from the WLAN terminal position information, determines information about a cell to which the terminal is expected to be handed off from the current position of the WLAN terminal, and provides the cell information to the WLAN terminal. This allows handoff to be performed without scanning a destination access point, thereby significantly reducing WLAN handoff time.

Abstract: An operation method and device for an integrated modem having a plurality of modems is provided. The method includes connecting the integrated modem to a mobile terminal, supplying, by the mobile terminal, power to each modem of the integrated modem, performing booting each modem to maintain a ready-on state, and controlling to operate a modem selected according to an input signal from an input unit while terminating supplying of power to the non-selected modem or maintaining the booting completion state.

Abstract: A connection control system and method for Wireless Broadband (WiBro) communication system are provided. The connection control method for a mobile communication system, which includes at least one radio access station for providing communication service to a portable subscriber station, and at least one access control router for controlling the radio access station, includes relaying, at a radio access station, an initial ranging request message from the portable subscriber station to an access control router; transmitting, at the access control router received the initial ranging request message, an initial ranging response message to the radio access station and neighbor radio access stations; and relaying, at a radio access station currently synchronized with the portable subscriber station and received the initial ranging response message, the initial ranging response message to the portable subscriber station.

Abstract: In the broadband wireless access communication system, handover using compressed information is performed by receiving a compressed broadcast message in a portable terminal, acquiring operator information and sector information from the compressed broadcast message, acquiring a preamble number from one of the compressed broadcast message and pre-stored information, identifying a cell and a sector based on the preamble number, the operator information, and the sector information, and when a sector of a handover target cell is a sector of another cell, executing inter-cell handover.

Abstract: A wireless broadband (WiBro) station is capable of supporting Quality of Service (QoS), and a method provides the QoS service in a WiBro network. A High_MAC processor is additionally constructed to parse a packet inputted from an application layer, assigns a QoS class according to a feature of the parsed packet, and transmits the packet through a channel corresponding to the assigned QoS class, thereby performing a QoS service through a separate QoS processing module provided between the application layer and a Media Access Control (MAC) layer. Thus, a burden imposed on the MAC layer is reduced, and a faster QoS service is provided.

Abstract: An operation method and device for an integrated modem having a plurality of modems is provided. The method includes connecting the integrated modem to a mobile terminal, supplying, by the mobile terminal, power to each modem of the integrated modem, performing booting each modem to maintain a ready-on state, and controlling to operate a modem selected according to an input signal from an input unit while terminating supplying of power to the non-selected modem or maintaining the booting completion state.

Abstract: A network switching method and apparatus of a mobile terminal for enabling the mobile terminal to switch between private and public networks for portable Internet access is provided. The network switching apparatus of a mobile terminal includes a connection manager for managing public network information, private network information including mappings between public base stations of a public network and private base stations of a private network, and authentication information, and a control unit for determining whether a signal strength of a signal received from a public base station, that is associated with a mobile terminal, is less than a threshold value, for determining, when the signal strength is less than the threshold value, whether to switch to a private base station of a private network mapped to the public base station, and for establishing, after determining to switch to the private base station, a connection with the private base station of the private network.

Abstract: A network connection method and apparatus for improving network connection performance of a mobile station in a Broadband Wireless Access (BWA) system is provided.

Abstract: A connection control system and method for Wireless Broadband (WiBro) communication system are provided. The connection control method for a mobile communication system, which includes at least one radio access station for providing communication service to a portable subscriber station, and at least one access control router for controlling the radio access station, includes relaying, at a radio access station, an initial ranging request message from the portable subscriber station to an access control router; transmitting, at the access control router received the initial ranging request message, an initial ranging response message to the radio access station and neighbor radio access stations; and relaying, at a radio access station currently synchronized with the portable subscriber station and received the initial ranging response message, the initial ranging response message to the portable subscriber station.

Abstract: In the broadband wireless access communication system, handover using compressed information is performed by receiving a compressed broadcast message in a portable terminal, acquiring operator information and sector information from the compressed broadcast message, acquiring a preamble number from one of the compressed broadcast message and pre-stored information, identifying a cell and a sector based on the preamble number, the operator information, and the sector information, and when a sector of a handover target cell is a sector of another cell, executing inter-cell handover.

Abstract: A wireless broadband (WiBro) station is capable of supporting Quality of Service (QoS), and a method provides the QoS service in a WiBro network. A High_MAC processor is additionally constructed to parse a packet inputted from an application layer, assigns a QoS class according to a feature of the parsed packet, and transmits the packet through a channel corresponding to the assigned QoS class, thereby performing a QoS service through a separate QoS processing module provided between the application layer and a Media Access Control (MAC) layer. Thus, a burden imposed on the MAC layer is reduced, and a faster QoS service is provided.

Abstract: In a system and method for handoff using a hybrid network, a wireless local area network (WLAN) terminal determines its own position information through communication with a code division multiple access (CDMA) base station and a global positioning system (GPS) satellite, and a cell mapping server obtains information about a WLAN cell where the WLAN terminal is currently located from the WLAN terminal position information, determines information about a cell to which the terminal is expected to be handed off from the current position of the WLAN terminal, and provides the cell information to the WLAN terminal. This allows handoff to be performed without scanning a destination access point, thereby significantly reducing WLAN handoff time.

Abstract: Disclosed is an environment-friendly, pH-neutral, loaded stream extinguishant and a method for preparing the same. The extinguishant is prepared from a mixture of a fire extinguishable component, an organic acid, a surfactant and water. It is very effective in controlling A class fires, as well as showing excellent flame retardance. Also, the extinguishant is neutral in pH so as to neither corrode extinguisher parts, nor affect soil negatively. It can be also applied to portable extinguishers.