摘要:
A Peer-to-Peer (P2P)-based network apparatus and system is provided. The P2P-based network apparatus may sense the movement of a mobile station (MS), select a candidate proxy, and change a proxy of the MS to the candidate proxy.
摘要:
A content sharing method of an intermediate node based on a content oriented network (CON) is provided. The method includes receiving, from a content requesting terminal, a proxy sharing request message with respect to a content including a content name of the content, the content including a plurality of data segments, generating data segment request messages with respect to each of the plurality of data segments corresponding to the content, in response to the reception of the proxy sharing request message, transmitting the data segment request messages to at least one terminal having the plurality of data segments, receiving the plurality of data segments from the at least one terminal, and transmitting the content to the content requesting terminal, using an aggregated data transmission scheme based on the received plurality of data segments.
摘要:
Provided are a method and apparatus for sharing content, using information regarding a group change in a content oriented network environment. In a case where a group to which a target user equipment belongs is changed from a first group to a second group, the target user equipment may transmit, to a first group member management device, the information regarding the group change. The first group member management device may update information about a group to which the target user equipment currently belongs, based on the information regarding the group change. In response to a receiving of a content request from a requesting user equipment, the first group member management device may transfer the content request to the target user equipment.
摘要:
A light emitting device is disclosed. The light emitting device includes a first conductive type semiconductor layer, an active layer disposed on the first conductive type semiconductor layer, a tunnel junction layer comprising a second conductive type nitride semiconductor layer and a first conductive type nitride semiconductor layer disposed on the active layer, wherein the first conductive type nitride semiconductor layer and the second conductive type nitride semiconductor layer are PN junctioned, a first electrode disposed on the first conductive type semiconductor layer, and a second electrode disposed on the first conductive type nitride semiconductor layer, wherein a portion of the second electrode is in schottky contact with the second conductive type nitride semiconductor layer through the first conductive type nitride semiconductor layer.
摘要:
A control message processing method and a control message processing apparatus using the method on a wireless mesh network are provided where a neighbor solicitation (NS) information is generated by extracting a part or an entire NS message, the NS message having been generated to request a medium access control (MAC) address of a destination node. A modified route request (RREQ) message, including the NS information, is generated to request the MAC address of the destination node and a routing path to the destination node, and is broadcasted.
摘要:
Provided are communication devices and methods for requesting content in a network based on a hierarchical name structure. A content requester may search for content without the use of the entire content name in the network based on the hierarchical name structure.
摘要:
The present disclosure relates to a method capable of reducing a communication cost for tracking a location of construction equipment by controlling a transmission cycle of locational information of the construction equipment.To this end, the present disclosure provides a method for tracking a location of construction equipment by using a tracking vehicle, including: transmitting locational information from the construction equipment at a predetermined transmission cycle; calculating a distance between the construction equipment and the tracking vehicle based on the locational information received from the construction equipment; and if the calculated distance is less than a predetermined value, commanding that a transmission cycle of the locational information of the construction equipment be made shorter than a predetermined transmission cycle.
摘要:
An apparatus and method for receiving data over a network are provided. The data reception apparatus may include a receiver, a congestion decision unit and a suspension session selector. The receiver is configured to receive segments of data, using sessions corresponding to data transmissions apparatuses. The congestion detection unit is configured to determine whether a network to be utilized by a corresponding segment is congested, based on a status of each of the sessions. The suspension selector is configured to select a suspension session from the sessions where the network is determined to be congested.
摘要:
A flight dynamics subsystem (FDS), a velocity increment calculation module, and operational methods of the same are provided. A used fuel quantity actually used in a satellite is calculated, and a velocity increment is calculated using the calculated fuel quantity. Therefore, an orbit of the satellite may be estimated more accurately.
摘要:
Provided are an apparatus and method for executing a telecommand on a geostationary satellite, and an apparatus and method for verifying a telecommand execution status on a geostationary satellite ground control system. When a telecommand on a satellite is executed, the satellite generates command execution verification words for the executed telecommand and adds the generated command execution verification words to a telemetry transfer frame, and thus a satellite ground control system can easily verify the telecommand execution. In addition, when telecommand execution result is verified by a satellite ground control system, since an execution result of a time-tag telecommand can be verified without a time delay through command execution verification words provided by a satellite, and a telecommand image DB, a telecommand verifier DB, and a telecommand verifier provided by the satellite ground control system, a series of processes from transmission to verification of a telecommand, in particular a time-tag telecommand, can be automatically processed in real-time without intervention of an operator.