Abstract: The present invention is related to a method for managing mobility of a mobile node and a system using the method employing Proxy Mobile IP technology. A method for managing mobility of a mobile node and a system using the method according to the present invention minimizes overhead imposed on LMA (Local Mobility Anchor) when a mobile node carries out handover or multiple connections and complements a drawback observed when LMA of Proxy Mobile IP carries out multiple connections. To achieve the above advantages, in a method for managing mobility of a mobile node and a system using the method according to the present invention, LMA and MAG utilizes connection type information of a mobile node.

Abstract: The present invention relates to a method for generating a decision tree using an inference engine in a ubiquitous environment. In the method, a data table for a data event set is generated based on information collected by at least one sensor. Subsequently, a weight value of the data event set is established, and an entropy is calculated based on the established weight value (here, the entropy is a scale for classifying the information collected by the sensor into respective classes). In addition, the decision tree for the collected information is formed based on the calculated entropy.

Abstract: A method of assigning a resource of a united system in which a plurality of single systems are complexly operated includes: determining a cost function using standard network state information commonly used within the united system; and assigning a resource based on the cost function. Therefore, a state of each system and user requirements can be fully reflected and a resource can be efficiently managed within a united system in which several systems are complexly operated.

Abstract: The present invention relates to a method for establishing a connection between heterogeneous user-networks and a domain name system proxy server for controlling the same. The present invention has features of providing a method for supporting communication between user-computers included in Internet-compatible heterogeneous networks through a gateway based on an Internet public network and a domain name system proxy server for controlling the method. According to the present invention, supporting mutual communication between various networks based on one network can be expected.

Abstract: A method for supporting session mobility, more particularly, a method for supporting session mobility that can move various sessions between two or more devices by using session initiation protocol (SIP). Various sessions can be simultaneously moved by utilizing a SIP PUBLISH message. Accordingly, a user can utilize various services as they are regardless of changing of service receiving device while the user utilizes various services. Also, the session mobility can be effectively supported whether the target of the session movement is known or not.

Abstract: A method of assigning a resource of a united system in which a plurality of single systems are complexly operated includes: determining a multi-user diversity order based on the quantity of users existing within the system; determining a cost function using the determined multi-user diversity order; and assigning a resource based on the determined cost function. Therefore, a state of each system and user requirements can be fully reflected and a resource can be efficiently managed within a united system in which several systems are complexly operated.

Abstract: A method and system for selectively viewing a broadcast channel in a particular place is provided. A method of selectively viewing a broadcast channel in a particular place includes: receiving image information associated with different locations of the particular place from a plurality of imaging devices; receiving sound information associated with the particular place from at least one of the plurality of imaging devices; multi-channelizing the image information and the sound information to generate a frame that includes the image information and the sound information; and transmitting the generated frame to a user terminal.

Abstract: In a heterogeneous wireless network system, a apparatus for notifying a mobile station of existence of traffic from a network to which the mobile station is not connected receives an identifier of the mobile station from the network to which the mobile station is not connected. The apparatus checks the network to which the mobile station having the same identifier as the received is connected, and transmits a signal for indicating existence of traffic to the mobile station by using the network's interface.

Abstract: The present invention relates to a binding update identifier sub-option field configuration method and a binding update information configuration method. In the method, a binding update identifier sub-option field including current used interface and data characteristics and corresponding to one interface of the plurality of interfaces is generated, the binding update identifier sub-option field is transmitted to a home agent and a correspondent node, a care-of address corresponding to a binding update identifier is stored, and binding update is performed.

Abstract: Provided are a location awareness apparatus using a camera and a method thereof. The apparatus includes: an image capturing unit for photographing a position identification tag using a camera; a distance measuring unit for measuring a distance to a position identification tag; an incident angle measuring unit for measuring a photographing angle at a visual point; an image analyzing unit for reading the photographed image from the image capturing unit, and requesting location information corresponding to the read information to a position recognition server; and a location awareness unit for estimating a current location using the distance to the position identification tag, the photographing angle of the position identification tag, and the location information corresponding to the read information by the image analyzing unit.

Abstract: The present invention relates to a method for generating a decision tree using an inference engine in a ubiquitous environment. In the method, a data table for a data event set is generated based on information collected by at least one sensor. Subsequently, a weight value of the data event set is established, and an entropy is calculated based on the established weight value (here, the entropy is a scale for classifying the information collected by the sensor into respective classes). In addition, the decision tree for the collected information is formed based on the calculated entropy.

Abstract: Provided is a polarization division multiplexed optical transmission system including a transmitter and a receiver. The transmitter includes a first light source generating an optical signal having a linear polarization state; a second light source generating an optical signal having a horizontal polarization state; a first signal generator receiving a first data stream to modulate the optical signal output from the first light source using an M method; a second signal generator receiving a second data stream to modulate the optical signal output from the second light source using an N method; and a polarization beam combiner (PBC) multiplexing the optical signals that were modulated using the M and N methods while maintaining the linear and horizontal polarization states.

Abstract: A dynamic service combination system and service provision method using user's context information are provided. a service may be dynamically provided and a new service may be combined to be provided to a service user using the user's context information. In addition, a new ontology may be configured by finding a new knowledge through AI engine's data mining, and thus a success rate of the service provision may be increased, and a dynamic service provision may be achieved.

Abstract: A user and service mobility support system and method of in a ubiquitous environment is provided. When a user moves to a domain area capable of using various service equipment by pursuing a location of a user using a mobile communication service outdoors, the user may continuously use a service by determining service equipment based on the user's preference information, available equipment information, and service characteristic information. The user may continuously use a service through various equipments although the user moves into the domain area while the user has used a mobile communication service through the terminal outdoors. In order to select service equipment from among various media equipment, the optimum service equipment is determined based on the user and service characteristic information, and accordingly, it is possible to provide service movement convenience and satisfaction to the user.

Abstract: A method for supporting session mobility, more particularly, a method for supporting session mobility that can move various sessions between two or more devices by using session initiation protocol (SIP). Various sessions can be simultaneously moved by utilizing a SIP PUBLISH message. Accordingly, a user can utilize various services as they are regardless of changing of service receiving device while the user utilizes various services. Also, the session mobility can be effectively supported whether the target of the session movement is known or not.