Patent application number | Description | Published |
20120166556 | METHOD, DEVICE AND SYSTEM FOR REAL-TIME PUBLISH SUBSCRIBE DISCOVERY BASED ON DISTRIBUTED HASH TABLE - A method, a device, and a system for real-time publish subscribe (RTPS) discovery based on a distributed hash table (DHT) are provided. The method for RTPS discovery based on a DHT includes: registering, by a participant peer of participants, the participants in a distributed hash table (DHT) of an overlay network; obtaining location information on relative participants to be discovered from the DHT; sharing information on entities of the relative participants by exchanging a discovery message with the participant peer based on the location information on the obtained relative participants; and performing handshaking between the entities of the participants and the entities of the relative participants. Therefore, the exemplary embodiments of the present invention can rapidly and efficiently perform the discover of the participants based on the DHT. | 06-28-2012 |
20130132582 | APPARATUS AND METHOD FOR SUPPORTING QOS IN MIDDLEWARE FOR DATA DISTRIBUTION SERVICE - Disclosed herein are an apparatus and method for supporting Quality of Service (QoS) in middleware for Data Distribution Service (DDS). The apparatus includes a QoS policy analysis module, a QoS policy management module, and a QoS policy process module. The QoS policy analysis module extracts a set of QoS policies set up by Data Centric Publish Subscribe (DCPS) and associated with publication/subscription, and analyzes the QoS policies. The QoS policy management module determines the consistency of QoS policies of the DDS, and negotiates QoS policies for DDS communication. The QoS policy process module handles the QoS policies of the DDS. | 05-23-2013 |
20130205012 | APPARATUS AND METHOD FOR TRANSMITTING NODE DISCOVERY MESSAGES - Disclosed herein are an apparatus and method for transmitting Node Discovery Messages. The apparatus includes a Medium Access Control layer information collection unit, a Discovery Window Slot calculation unit, a DW size determination unit, a DWS selection unit, and an NDM processing unit. The MAC layer information collection unit collects time slot information for NDMs in a previous round. The DWS calculation unit generates information about the slots of a Discovery Window of a discovery frame in the previous round based on the time slot information. The DW size determination unit determines the size of the DW in a current round based on the information about the slots of the DW. The DWS selection unit selects Discovery Window Slots in the current round based on the size of the DW. The NDM processing unit sends the NDMs during respective times corresponding to the DWSs. | 08-08-2013 |
20130346580 | APPARATUS AND METHOD FOR GENERATING QOS PROFILE FOR SUPPORTING DATA DISTRIBUTION SERVICE IN CYBER-PHYSICAL SYSTEM - Disclosed herein are an apparatus and method for generating a Quality of Service (QoS) profile. The apparatus includes a user interface unit, a resource QoS policy generation unit, a traffic QoS policy generation unit, and a QoS profile generation unit. The user interface unit receives a QoS policy for Data Distribution Service (DDS) from a user. The resource QoS policy generation unit collects resource data for a device that performs the DDS, and generates a QoS policy for handling resources using the collected resource data. The traffic QoS policy generation unit collects traffic data for a network via which the DDS is performed, and generates a QoS policy for handling traffic using the collected traffic data. The QoS profile generation unit generates a QoS profile based on the QoS policy received from the user, the QoS policy for handling resources, and the QoS policy for handling traffic. | 12-26-2013 |
20140115153 | APPARATUS FOR MONITORING DATA DISTRIBUTION SERVICE (DDS) AND METHOD THEREOF - An apparatus for monitoring a data distribution service (DDS), and a method thereof are disclosed. A DDS monitoring apparatus monitoring a data distribution service (DDS) includes: a monitoring participant configured to receive a monitoring topic from a DDS node, wherein the monitoring topic is status information of the DDS node; a monitoring data collector configured to collect the monitoring topic, and to determine whether or not the monitoring topic is urgent; and a monitoring data analyzer configured to analyze the monitoring topic according to whether or not the monitoring topic is urgent to determine whether to create DDS status information corresponding to the status of the DDS node. Accordingly, it is possible to monitor a DDS in real time. | 04-24-2014 |
20140310209 | APPARATUS AND METHOD FOR SHARING TOPIC BETWEEN AUTONOMIC COMPUTING DEVICES - The present invention relates to an apparatus and method for sharing a topic between autonomic computing devices. The apparatus includes a knowledge base unit for storing information about abnormal states of an autonomic computing device. An autonomic computing management unit recognizes an abnormal state of the autonomic computing device based on the information about the abnormal states stored in the knowledge base unit, learns self-management for solving the abnormal state, and, when information about a new abnormal state is acquired during learning of self-management, generates a topic from the information about the new abnormal state. A topic transmission/reception unit transmits the topic generated by the autonomic computing management unit to a plurality of autonomic computing devices present in an identical domain or receives topics transmitted from the plurality of autonomic computing devices. | 10-16-2014 |
20140351666 | MULTICAST APPARATUS AND METHOD - Disclosed herein are a multicast apparatus and method. In the multicast method, a multicast apparatus searches one or more communication objects in a distributed network environment. Multicast data is received from a sender-side communication object among the one or more communication objects. A polling message is received from the communication object that transmitted the multicast data. A response message corresponding to the polling message is sent. It is determined whether a transmission error has occurred between communication objects based on results of sending of the response message, and multicasting is performed based on results of determination. | 11-27-2014 |
20140365589 | METHOD AND APPARATUS FOR DISCOVERING COMMUNICATION ENTITY - Disclosed herein are an apparatus and method for discovering a communication entity. The apparatus for discovering a communication entity includes a list generation unit for generating a list of connection target Data Readers (DRs), a counter generation unit for generating a counter including information about a number of the connection target DRs, and a discovery message communication unit for establishing communication connections to the connection target DRs based on the list and the counter. The discovery message communication unit includes a transmission unit for transmitting a DR discovery message including data topic information or possible service quality information to each of the connection target DRs, and a reception unit for receiving a Data Writer (DW) discovery message including data topic information or possible service quality information from each of the connection target DRs. | 12-11-2014 |