Patent application number | Description | Published |
20090040929 | Method and apparatus for dynamically managing hierarchical flows - Provided are a method and apparatus for dynamically managing hierarchical flows that more efficiently process packet traffic while maintaining compatibility with an existing packet data network in transferring both circuit traffic and packet traffic in a packet switched network. The method for dynamically managing hierarchical flows includes: receiving data packets, classifying the data packets according to attributes of the received data packets, and producing first flows; determining whether traffic of each of the first flows exceeds a predetermined bandwidth limit, and performing a packet drop process or producing second flows for first flows that exceed the bandwidth limit, according to a flow-specific policy; and performing second flow processing on the second flows according to a second flow policy. Only flows exceeding the bandwidth limit or causing congestion are hierarchically divided for management. This makes it possible to finely manage the flows without complex operations. | 02-12-2009 |
20090086764 | System and method for time synchronization on network - A system and method for time synchronization on a network is provided. According to the system and method for time synchronization, a slave clock device does not continuously receive a time synchronization message periodically transferred from a master clock device and thus does not correct its time upon all such occasions. Rather, the slave clock device requests time information from the master clock device only when the slave clock device needs to correct its time, and receives a time synchronization message transferred from the master clock device and compensates for its time deviation only while the slave clock device is activated, thereby reducing its power consumption and amount of computation. | 04-02-2009 |
20100158009 | HIERARCHICAL PACKET PROCESS APPARATUS AND METHOD - Provided is a hierarchical packet processing apparatus and method. In one general aspect, a packet is analyzed, divided into an upper layer and a lower layer. It is determined whether a property of the packet to be analyzed has been already analyzed or has to be re-analyzed with respect to each of the upper and lower layers of the packet. Therefore, deep packet inspection is performed only when it is required, and thus assurance of quality of service (QoS) during packet processing can be achieved, as well as reduced waste of resources. | 06-24-2010 |
20110013737 | TIME SYNCHRONIZATION APPARATUS BASED ON PARALLEL PROCESSING - A parallel processing-based time synchronization apparatus is disclosed. The time synchronization apparatus employs a double-filter structure based on parallel processing, thereby providing more precise and reliable time synchronization between a master device and a slave device. | 01-20-2011 |
20110051730 | MULTI-LAYER DATA PROCESSING APPARATUS AND METHOD THEREOF - A multi-layer data processing apparatus and method. The multi-layer data processing unit may classify received multi-layer data into lower layer data and higher layer data using lower layer information, and generate and output a traffic flow of the lower layer data or traffic flows of the lower layer data and the higher layer data with reference to a rule information table. In the rule information table, pieces of lower layer rule information may be linked to pieces of higher layer rule information. | 03-03-2011 |
20110107059 | MULTILAYER PARALLEL PROCESSING APPARATUS AND METHOD - A multilayer parallel processing apparatus. The multilayer parallel processing apparatus includes two or more hierarchical parallel processing units, each configured to process flow data corresponding to a hierarchy that is allocated thereto in response to inputting pieces of flow data configured with two or more hierarchies, and a common database configured to be accessed by the two or more hierarchical parallel processing units and store processing results of each of the hierarchical parallel processing units. | 05-05-2011 |
20120124212 | APPARATUS AND METHOD FOR PROCESSING MULTI-LAYER DATA - A multi-layer data processing apparatus and method are provided. The multi-layer data processing apparatus includes a lower hierarchy processing unit configured to generate at least one lower hierarchy flow from input data using lower hierarchy information, and to allocate the generated lower hierarchy flows to a plurality of lower hierarchy processors to perform lower hierarchy processing in respect of the lower hierarchy flows in parallel; and a higher hierarchy processing unit configured to generate at least one higher hierarchy flow from data transmitted from the lower hierarchy processing unit using higher hierarchy information, and to allocate the generated higher hierarchy flows to a plurality of higher hierarchy processors to perform higher hierarchy processing in parallel in respect of the higher hierarchy flows. | 05-17-2012 |
20120155497 | APPARATUS AND METHOD FOR ESTIMATING TIME STAMP - An apparatus includes a difference extraction unit to extract a difference between a second time stamp value, which is obtained by adjusting a first time stamp value that is measured at a time of arrival of a synchronization message transmitted by the master at a Layer 3 to be synchronized in frequency with a clock of the master, and a third time stamp value, which is measured at a time of departure of the synchronization message from the master; a minimum filter to select a minimum from one or more difference values extracted by the difference extraction unit; and a delay variation calculation unit to estimate a time of arrival of a current synchronization message at the Layer 3 based on the selected minimum and calculate a delay variation. | 06-21-2012 |
20140160931 | APPARATUS AND METHOD FOR MANAGING FLOW IN SERVER VIRTUALIZATION ENVIRONMENT, AND METHOD FOR APPLYING QOS - An apparatus and method for managing a flow in a server virtualization environment, and a method of applying a QoS policy, the method including a flow processing unit configured to analyze a flow generated by a virtual machine (VM) to extract flow information, determine whether the flow is a new flow by comparing the extracted flow information with preset flow information, and apply a corresponding Quality of Service (QoS) policy to the flow, and a QoS management unit configured to, in a case in which the flow is a new flow, generate a QoS policy for the analyzed flow based on the extracted flow information and prestored virtual machine information, and transmit the generated QoS policy to the flow processing unit. | 06-12-2014 |