Patent application number | Description | Published |
20100332830 | SYSTEM AND METHOD FOR MUTUAL AUTHENTICATION BETWEEN NODE AND SINK IN SENSOR NETWORK - Disclosed a system and method for mutual authentication between a node and a sink in a sensor network. At least one sink periodically creates a neighboring sink list including information on at least one adjacent sink, and the sink requests node authentication to a base station when receiving an authentication request from the node and transmits its own neighboring sink list to the node when the node authentication has been completed. When the node moves and requests authentication to another sink, the another sink stores a neighboring sink list received from the node, determines if a node-authenticable sink exists in its own neighboring sink list according to the authentication request, and requests re-authentication of the node to the node-authenticable sink when the node-authenticable sink exists, so that re-authentication between the node and the sink is easily performed. | 12-30-2010 |
20100332831 | METHOD AND APPARATUS FOR AUTHENTICATING A SENSOR NODE IN A SENSOR NETWORK - A method and apparatus for authenticating a sensor node in a sensor network. The method for authenticating a sensor node by a first sink node in a sensor network includes receiving an authentication request using an authentication ticket from the sensor node, identifying a second sink node which has issued the authentication ticket, decoding the authentication ticket using a group key, which is previously stored in correspondence to the second sink node to confirm the validity of the authentication ticket, when the second sink node is included in a neighboring node list, normally processing authentication for the sensor node, generating an authentication ticket using a group key of the first sink node, and transmitting the generated authentication ticket to the sensor node. | 12-30-2010 |
20110039494 | SYSTEM, METHOD AND APPARATUS FOR WIRELESS NETWORK CONNECTION USING NEAR FIELD COMMUNICATION - 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. | 02-17-2011 |
20110110255 | APPARATUS AND METHOD FOR AVOIDING CHANNEL INTERFERENCE IN A MULTI-CHANNEL SENSOR NETWORK - 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. | 05-12-2011 |
20110111701 | APPARATUS AND METHOD FOR AVOIDING CHANNEL INTERFERENCE IN A SINGLE CHANNEL SENSOR NETWORK - 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. | 05-12-2011 |
20110115706 | Apparatus and method for providing pointer controlfunction in portable terminal - 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. | 05-19-2011 |
20110116631 | METHOD AND APPARATUS FOR FORMING SECURITY CHANNEL IN SHORT RANGE COMMUNICATION - 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. | 05-19-2011 |
20110126015 | SINK AUTHENTICATION SYSTEM AND METHOD USING MOBILE COMMUNICATION NETWORK - A system is provided for authentication between a mobile device (MD) and a sink using a mobile communication network. If a sink authentication request for the sink is received from the MD, a base station (BS) sends a sink authentication response including sink authentication information for the sink, to the MD. The MD forwards the sink authentication request for the sink to the BS, and if a sink authentication response is received from the BS, authenticates the sink using the received sink authentication information. The sink performs authentication with the MD. | 05-26-2011 |
20120044827 | COMMUNICATION METHOD AND APPARATUS IN MOBILE AD-HOC NETWORK - 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. | 02-23-2012 |
20120083298 | METHOD AND APPARATUS FOR SECURE PAIRING IN WIRELESS COMMUNICATION - Provided is a wireless connection device including a selection information generating unit which generates selection information with respect to each external device of a plurality of external devices that transmitted signals for wireless connection; a selecting unit which compares the selection information regarding each external device of the plurality of external devices and selects an optimal device from among the plurality of external devices based on a result of the comparison; and a connection processing unit which establishes a wireless connection to a first external device, among the plurality of external devices, that first transmitted the signal for wireless connection, and, if the first external device is different from the optimal external device, terminates the wireless connection to the first external device and establishes a wireless connection to the optimal external device. | 04-05-2012 |
20120166580 | METHOD AND APPARATUS FOR COMMUNICATION USING HETEROGENEOUS PROTOCOLS - Heterogeneous protocol stacks are used in an approach including analyzing a destination network ID of data received by a shared, lower layer protocol stack, a data type field value, and/or whether any of the upper layer protocol stacks support broadcasting. An upper layer protocol stack is selected based on the results of the analysis. The received data is transmitted to the selected upper layer protocol stack. Accordingly, heterogeneous protocol stacks may be realized in one chip. | 06-28-2012 |
20120196536 | METHOD AND APPARATUS FOR REMOTELY CONTROLLING CONSUMER ELECTRONICS DEVICE BY USING WIRELESS PERSONAL AREA NETWORK - A method and apparatus for communicating with a target device in a personal area network (PAN), when a multi-function remote controller (MRC) is outside the coverage area of the target device. The apparatus includes a proxy device which automatically forms a virtual PAN by setting up a pairing link with the target device to control the target device. Accordingly, a user may continuously control the target device irrespective of the location of the MRC. | 08-02-2012 |
20140185717 | APPARATUS AND METHOD FOR FRAME SYNC DETECTION - An apparatus includes: first to N−1-th correlation-calculation units correlation-calculating a signal at a position corresponding to an n-th reference cell of a reference symbol in a received symbol and a signal at a position corresponding to an n+1-th reference cell of the reference symbol in the received symbol; a first calculation unit multiplying a result of phase correlation calculation of the n-th reference cell and the n+1-th reference cell by the calculation result of the correlation-calculation units and thereafter, summing up all of the multiplication results to calculate a first sum total; a second calculation unit multiplying a result of phase correlation calculation of an N−n−2-th reference cell and an N−n−1-th reference cell by the calculation result of the correlation-calculation units and summing up all of the multiplying results to calculate a second sum total; and a decider detecting a larger value between the first and the second sum total. | 07-03-2014 |