Abstract: A system, method, and apparatus are provided for establishing a wireless network connection between a mobile terminal and an electronic apparatus by using a near field communication network. At least one electronic apparatus is connected to the near field communication network. A mobile terminal is connected to the near field communication network, exchanges information with the at least one electronic apparatus for a wireless communication network connection through the connected near field communication network, and establishes the wireless communication network connection with the at least one electronic apparatus based on the exchanged information.

Abstract: A remote control apparatus including: a storage unit for storing message set information constituting information about one or more message sets each including one or more messages including different control requests; a control unit for generating binary code data each corresponding to the one or more messages each corresponding to the different control requests; and a communication interface unit for transmitting the binary code data to a controlled apparatus, wherein transmitted and received data amounts are minimized.

Abstract: A system, method, and apparatus are provided for establishing a wireless network connection between a mobile terminal and an electronic apparatus by using a near field communication network. At least one electronic apparatus is connected to the near field communication network. A mobile terminal is connected to the near field communication network, exchanges information with the at least one electronic apparatus for a wireless communication network connection through the connected near field communication network, and establishes the wireless communication network connection with the at least one electronic apparatus based on the exchanged information.

Abstract: A system, method, and apparatus are provided for establishing a wireless network connection between a mobile terminal and an electronic apparatus by using a near field communication network. At least one electronic apparatus is connected to the near field communication network. A mobile terminal is connected to the near field communication network, exchanges information with the at least one electronic apparatus for a wireless communication network connection through the connected near field communication network, and establishes the wireless communication network connection with the at least one electronic apparatus based on the exchanged information.

Abstract: A method and apparatus for selecting a wireless personal area network (WPAN) based adaptive radio frequency (RF) interface. The method includes obtaining RF interface information by establishing a WPAN based network connection with a target RF device; selecting an RF interface from among a plurality of RF interfaces using the obtained RF interface information, based on characteristics of applications and a network load; and establishing the selected RF interface by negotiating about the selected RF interface with the target RF device.

Abstract: A method of allocating logical channels in consideration of an interference range in a wireless sensor network includes defining logical channels to increase the number of available channels and determining the number of logical channels in accordance with the number of nodes within an interference range, allocating the logical channels to the nodes within the interference range so that the determined logical channels do not overlap each other, and exchanging data among the nodes using the allocated logical channels.

Abstract: A method is provided for synchronizing time between nodes in a wireless communication system. A reference node transmits a first packet to a correspondent node. Upon receiving the first packet, the correspondent node transmits a second packet with a reception time of the first packet recorded therein, to the reference node. Upon receiving the second packet, the reference node calculates a forward delay time using a transmission time and the reception time of the first packet. The correspondent node receives a third packet with the forward delay time from the reference node, and calculates a reverse delay time. The correspondent node calculates an offset value for the synchronization using the forward delay time and the reverse delay time.

Abstract: A method of avoiding a channel interference in a single channel sensor network, includes periodically measuring an energy of a channel used by at least one node included in the sensor network; exchanging the measured energy of the channel with a neighbor node of the at least one node; receiving energy of all nodes of the sensor network and determining if there is an interference, by a coordinator node, which is a highest node of the at least one node; and when it is determined that there is an interference, switching a channel influenced by the interference to a channel which has been scanned by the coordinator node and is not influenced by the interference, thereby avoiding an influence of the interference.

Abstract: A channel connection of a device that performs short range wireless communication is provided. If a public key that is broadcast by a specified device is received, the device encrypts its own UID (Unique Identifier) using the public key to transmit the encrypted UID to the specified device, transmits a pairing request to the specified device, and safely receives a key seed from the specified device using a security address included in a pairing device and the UID to form a security channel with the specified device.

Abstract: Disclosed is a time slot allocation method for reducing consumption of energy in a wireless sensor network, including transmitting and receiving, by an upper node, a report request and a response to and from at least one lower node in order to identify whether there is data to be transmitted between the upper node and the at least one lower node, transmitting, by the upper node, information required for data transmission to the at least one lower node based on the report request and response, and transmitting and receiving, by the upper node, data to and from the at least one lower node based on the information required for data transmission.

Abstract: A method and system for transmitting data from a base station to a mobile station in a wireless communication system using a multiple hop relay scheme is In a multi-hop system having a plurality of nodes, performing bidirectional data transmission between the nodes comprises: grouping the plurality of nodes into a first node group to a fourth node group, and assigning data transmission intervals to the grouped node groups at each frame, the data transmission intervals dividing each frame in time; receiving, by a second group node, data from an upper group node at a first frame and, at the same time, receiving, by a third group node, data from a lower group node; and transmitting by the second group node data to the upper group node at a second frame and, at the same time, transmitting by the third group node data to the lower group node.

Abstract: A method for reducing power consumption in a wireless sensor network is provided. An optimized path destined for a sink node is set using a common channel in which first and second nodes use a CSMA scheme. A first channel is set and transmission/reception slots for packet transmission/reception are allocated in the first channel. A packet is transmitted to the second node through a first transmission slot using a TDMA scheme. When a packet is not received from the second node through a first reception slot within a first set amount of time, the first reception slot is allowed to transition to an inactive state. The first node is one of the sink node, at least one parent node, and at least one child node of the parent node, and the second node is one of child nodes of the first node.

Abstract: A remote control apparatus including: a storage unit for storing message set information constituting information about one or more message sets each including one or more messages including different control requests; a control unit for generating binary code data each corresponding to the one or more messages each corresponding to the different control requests; and a communication interface unit for transmitting the binary code data to a controlled apparatus, wherein transmitted and received data amounts are minimized.

Abstract: A routing method and system for a mobile ad-hoc network is provided for efficiently routing a packet by quickly updating topology information shared by nodes adaptively to variation of the network topology while minimizing generation of redundant traffic. The routing method includes setting, at each current node, a self-potential value to a destination node upon receiving a route recovery request; and transmitting, when a transmission packet is destined to the destination node, the packet through a route established with at least one node in a descending order of potential value. The present invention reduces the redundant traffic dramatically, thereby improving the entire network throughput.

Abstract: A communication method between nodes that have their own timers and have an equal start time of a frame for Time Division Multiple Access (TDMA) communication based on their timers in a mobile ad-hoc network, in which a node receives a timer value derived by a neighbor node on the basis of a transmission time, from the neighbor node, the node calculates a time offset indicative of a difference between a timer value derived on the basis of a time the node received the timer value, and the received timer value, and stores the time offset in a memory, and upon receiving a time value indicating a time related to inter-node TDMA communication from the neighbor node, the node corrects the received time value as a time value based on its timer using the time offset, and performs TDMA communication using the corrected time value.

Abstract: A method and apparatus for selecting a wireless personal area network (WPAN) based adaptive radio frequency (RF) interface. The method includes obtaining RF interface information by establishing a WPAN based network connection with a target RF device; selecting an RF interface from among a plurality of RF interfaces using the obtained RF interface information, based on characteristics of applications and a network load; and establishing the selected RF interface by negotiating about the selected RF interface with the target RF device.

Abstract: An apparatus and a method for controlling a pointer output at a peripheral device using a portable terminal. In particular, an apparatus and method for controlling a pointer on a peripheral device screen using the portable terminal and shifting an object selected using the pointer to another peripheral device, including a pointer management unit to select information on a pointer to be used and transmit the information to a peripheral device, and determine a motion position of the pointer and provide the motion position to the peripheral device.

Abstract: A channel connection of a device that performs short range wireless communication is provided. If a public key that is broadcast by a specified device is received, the device encrypts its own UID (Unique Identifier) using the public key to transmit the encrypted UID to the specified device, transmits a pairing request to the specified device, and safely receives a key seed from the specified device using a security address included in a pairing device and the UID to form a security channel with the specified device.

Abstract: A method of avoiding a channel interference in a single channel sensor network, includes periodically measuring an energy of a channel used by at least one node included in the sensor network; exchanging the measured energy of the channel with a neighbor node of the at least one node; receiving energy of all nodes of the sensor network and determining if there is an interference, by a coordinator node, which is a highest node of the at least one node; and when it is determined that there is an interference, switching a channel influenced by the interference to a channel which has been scanned by the coordinator node and is not influenced by the interference, thereby avoiding an influence of the interference.

Abstract: A method of avoiding channel interference in a multi-channel sensor network, includes periodically measuring an energy of a channel used by at least one node included in the sensor network; determining if the energy of the channel has a value larger than a first preset threshold; when the energy of the channel has a value larger than the first preset threshold, concluding that the channel is influenced by an interference from an interference source, and reporting it to a parent node of the at least one node; and switching the channel influenced by the interference to a new channel, which is not influenced by an interference, thereby avoiding an influence of the interference.