Abstract: Methods and apparatus are provided for configuring sharing of an Internet connection at first and second devices. A program for configuring the Internet connection is transmitted from the first device to a second device via a cable. The program is stored in the first device. Messages are exchanged between the first device and the second device, via the cable, for configuration of network interfaces of the first device and the second device, after the second device executes the program. Network interfaces of the first device and the second device are configured in accordance with the program and the messages exchanged between the first device and the second device. The Internet connection of at least one of the first device and the second device is shared based on the configured network interfaces.

Abstract: A data aggregation method and data aggregation apparatus are provided. More particularly the data aggregation method includes: generating a plurality of data aggregation trees according to connection relationships between clusters that constitute a sensor network using a geographical code (GGC), selecting a single activation zone for each of the clusters which configures each of the plurality of data aggregation trees, selecting a maximum energy tree having a maximum total residual energy from the plurality of data aggregation trees, based on the single activation zone, and generating a tree list including activation zone information which corresponds to the maximum energy tree, and information about the maximum energy tree.

Abstract: An apparatus and method of determining a number of data transmissions in a sensor network are provided. More particularly, an apparatus for determining a number of data transmissions preferably includes an interest zone detector for detecting an interest zone based on a user query, a zone determination unit for determining whether the interest zone is overlapped with a sensing zone, a zone calculator for calculating an overlap amount when the interest zone is overlapped with the sensing zone, and a transmission number determination unit for determining a number of data transmissions according to the overlap amount.

Abstract: A data aggregation method and data aggregation apparatus are provided. More particularly the data aggregation method includes: generating a plurality of data aggregation trees according to connection relationships between clusters that constitute a sensor network using a geographical code (GGC), selecting a single activation zone for each of the clusters which configures each of the plurality of data aggregation trees, selecting a maximum energy tree having a maximum total residual energy from the plurality of data aggregation trees, based on the single activation zone, and generating a tree list including activation zone information which corresponds to the maximum energy tree, and information about the maximum energy tree.

Abstract: An apparatus and method of determining a number of data transmissions in a sensor network are provided. More particularly, an apparatus for determining a number of data transmissions preferably includes an interest zone detector for detecting an interest zone based on a user query, a zone determination unit for determining whether the interest zone is overlapped with a sensing zone, a zone calculator for calculating an overlap amount when the interest zone is overlapped with the sensing zone, and a transmission number determination unit for determining a number of data transmissions according to the overlap amount.

Abstract: A sensor network and method for task maintenance query using a query cache are provided. When a query generated by a user is transmitted through a relay node to a sensor node, the relay node can accurately transmit the query to a newly installed sensor node or a sensor node moving from another area to a specific area using a query cache. Thus, the reliability of the transmission of the query can be improved, and thus a task of the query can be maintained.

Abstract: A method of processing emergent data in a wireless sensor network is provided in which the latest information is collected from each sensor node and stored, newly-received sensing data are determined as emergent data if an error is over a certain value compared to the latest information from each node, and the emergent data are added with average data of neighbor nodes and transmitted to a sink node. Accordingly, whether neighbor sensor nodes are normal in a wireless sensor network can be determined and managed. An intermediate node can process emergent data generated from each sensor node and separate data by a sensor malfunction or urgent data so that a malfunction of each sensor node can be easily determined and reliability of sensing data of each sensor node can be improved.