Electronics and Telecommunications Research Institute

Yong Woon Kim

Jun Seob Lee

Hyeong Ho Lee

Yong Jin Kim

Hyoung Jun Kim

Jung Soo Park

Seok Joo Koh

Sang Keun Yoo

Provided is a method and apparatus for managing networks. The method includes defining a set of managed objects of each of the networks to be managed, sending a request for information about the set of managed objects to an agent of the networks to be managed, and recognizing manageable managed objects based on information representing the managed objects, which is transmitted from the agent in response to the request. A network manager requests, receives, and obtains information about managed objects of each of sensor networks, especially heterogeneous sensor networks, thereby managing the heterogeneous sensor networks in an integrated way.

Method and apparatus for managing networks

Provided is an apparatus and method for preventing air baggage from getting lost using a radio frequency identification (RFID) system. The apparatus for preventing baggage from getting lost, change, or stolen in which a baggage tag storing baggage management information is attached to the baggage and a receipt tag storing the baggage management information is issued to a baggage owner, the apparatus includes: a tag reader reading the receipt tag and the baggage tag in a predetermined area; and a determiner determining whether the tag reader reads the receipt tag including the same baggage management information as the baggage management information of the baggage tag within a predetermined time before and after the tag reader reads the baggage tag. As a result, air baggage is quickly and exactly managed, costs is reduced, and foreign confidence of an airport is increased, thereby preventing baggage from getting lost and exchanged.

Apparatus and method for preventing loss of baggage using RFID

A method for strictly managing group membership in Internet multicast applications is disclosed. The method comprises a group creation and enrollment step, a group announcement step, a group query step, a group information acquisition step, a group registration step, a leaving of the group step, a failure information response step and a fragment message transmission step. In the group creation and enrollment step, a group management server creates a group and performs group registration. In the group announcement step, the group management server announces the created group. In the group query step, the group management client inquires the group information of the group management server. In the group information acquisition step, the group management client joins a known group address and acquires the group information. In the group registration step, the group management client enrolls in the group management server. In the leaving of the group step, the group management client leaves the group. In the failure information response step, the group management server transmits information on a reason for failure to the group management. In the fragment message transmission step, the group management client transmits the fragment messages, while the group management server acquires the group information by assembling the fragment messages.

Method for managing group membership in internet multicast applications

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Cheonan, South Korea

Yong Woon Kim