Abstract:
Vertical handover apparatus and method in a wireless communication system are provided. The method includes examining whether there exists an accessible target network while communicating with a serving network; when there exists the accessible target network, linking up to the target network; changing a communication state to an idle mode by de-registering the linked target network; and performing a network re-entry to the target network in a vertical handover to the target network. When the terminal can execute the vertical handover without the seamless service support and reduce the handover delay.
Abstract:
A method and apparatus for managing a Media Independent Handover (MIH) service is provided. The MIH service management method includes setting state information of a Media Independent Handover Function (MIHF), and managing MIH services based on the set state information of the MIHF.
Abstract:
The present invention discloses a method for manufacturing am ultra-hydrophilic thin film coated metal product, and an ultra-hydrophilic thin film coated metal product. In order to easily manufacture an air conditioning metal material having excellent hydrophilic performance, aging property and corrosion resistance on an industrial production scale, an HMDSO anticorrosive thin film is selectively formed on both surfaces of a metal substrate sheet, and an ultra-hydrophilic Ti—O—C group compound thin film is coated on the anticorrosive thin film. The metal substrate sheet is mechanically processed into a target shape.
Abstract:
A method and apparatus for optimizing a cross layer in an ad-hoc wireless network are provided. A link price is set using the number of packets of a queue. A flow rate is set using the link price. A channel access rank is set by comparing the link price with a link price of a neighboring node. A channel access backoff time is set based on the channel access rank. The method and apparatus for optimization may not be subject to interference and can simultaneously obtain fairness and efficiency while adaptively setting link capacities.
Abstract:
The present invention relates to a plasma polymerizing apparatus comprises a polymerizing chamber polymerizing surface of substrates by high voltage discharge, a discharge electrode installed inside of the polymerizing chamber, an opposite electrode having a plurality of uniform edges in order to get electric field be formed uniformly on the surface of the electrode, a high voltage applying unit applying the high voltage to the electrode, a gas providing unit providing monomer gas and non-monomer gas inside of the polymerizing chamber, and a pumping unit keeping vacuum inside of the chamber. The present invention can keep the uniformity of the electrode, accordingly the high quality polymerizing film can be fabricated by keeping the uniformity of the current density, carbonation on the each part of the electrode.
Abstract:
The present invention relates to a refrigerator.With the refrigerator according to the embodiment of the present invention, the refrigerator provided with the freezing cycle is provided to be movable outdoors, making it possible to freshly preserve food outdoors.
Abstract:
The embodiment relates to a refrigerator. A dispenser is not exposed to the outside when the dispenser is not used, such that the design of the refrigerator can be upgraded and the injection of foreign materials into the dispenser is blocked, such that sanitary conditions can be improved.
Abstract:
An apparatus for distributing data traffic in heterogeneous wireless networks is provided. A terminal for transmitting data to a plurality of wireless networks, includes a transmission rule storing unit to store a data transmission rule with respect to the plurality of wireless networks, a data dividing unit to divide first data into a plurality of first data groups based on the stored data transmission rule, a transmission network selecting unit to select an individual transmission network for each divided data group from the plurality of wireless networks based on the determined data transmission rule, and a network access unit to transmit each data group to the selected transmission network.
Abstract:
A method of providing a handover service to a mobile communication terminal supporting multi-modal communications, and a mobile communication terminal for performing the method are provided. More particularly, a method of eliminating an interruption of a data transmission service occurring during a handover between different communication networks, and a terminal for performing the method are provided. A method of providing a handover service of a mobile communication terminal supporting multi-modal communications can include: transmitting and receiving data to/from a corresponding node via a first access network and a second access network while simultaneously maintaining an association with the first access network and the second access network, determining a point in time of completing a handover registration, and releasing an association with the first access network after the point in time of completing the handover registration.
Abstract:
The present invention discloses a refrigerator including a liquid, cool air supplied to supercool the liquid, and a preventing means for preventing the liquid from existing as a solid phase, and a method of operating the refrigerator. The preventing means is at least one of an energy generator for supplying energy to the liquid supplied with the cool air to maintain the liquid in the supercooled state, a restricting member for interrupting the motion of the liquid, and a heater for converting the liquid converted into a solid phase into the liquid.