Patent application number | Description | Published |
20110023088 | FLOW-BASED DYNAMIC ACCESS CONTROL SYSTEM AND METHOD - A traffic analysis and flow-based dynamic access control system and method. The flow-based dynamic access control system for controlling a user's access to an internal communication network through an external communication network includes an access control unit operating in an access control mode in which traffic received from a user is basically blocked, generating state management information of a flow, which is received from the user, based on a specified packet of the flow, and verifying whether access of the flow to the internal communication network is a normal access. As a proactive defense concept of allowing only normal users to access an internal network, a method of blocking attacks from a system contaminated by a worm virus, detecting a cyber attack on a certain system in advance and automatically avoiding the cyber attack, and guaranteeing the quality of normal traffic even under cyber attacks without performance degradation of the internal network is provided. | 01-27-2011 |
20110044337 | SYSTEM AND METHOD FOR PROVIDING IPTV SERVICE - In a system for providing an IPTV service, if a multicast address of an IPTV channel received from a head-end is a multicast address requested by a mobile node through a tunnel, an end router confirms a care of address (CoA) of the mobile node corresponding to the multicast address of the IPTV channel, sets the multicast address in the first header of broadcasting traffic, sets the CoA of the mobile node in the second header of the broadcasting traffic, and then sends the broadcasting traffic. | 02-24-2011 |
20110080909 | METHOD AND APPARATUS FOR CONTROLLING RECEIVING IP MULTICAST SERVICES BASED ON NETWORK - Provided is a network-based Internet Protocol (IP) multicast service reception controlling apparatus and method. Data corresponding to a multicast channel may be controlled based on a snooping table. The snooping table may be updated based on the service profile. The snooping table may be updated based on a control message, and the control message may be based on whether a user is subscribed to the multicast channel. Whether data corresponding to the multicast channel is to be transmitted may be determined based on whether the data is being transmitted to another user in response to a request from the other user. | 04-07-2011 |
20110085552 | SYSTEM AND METHOD FOR FORMING VIRTUAL PRIVATE NETWORK - Technology for forming a virtual private network (VPN) is provided. A VPN gateway that supports mobility with a connection node having a virtual home address (HoA) and a care of address (CoA) includes a mobility support unit, a data security unit, and a virtual address converter. When a packet is transferred from the connection node, the mobility support unit sustains a binding relationship between a home address (HoA) of the connection node and the changed CoA, and processes a mobility tunnel for the packet, thereby generating a first conversion packet. The data security unit performs a security test of the first conversion packet. The virtual address converter converts the HoA of the connection node, which is a source address of the first conversion packet in which the security test is complete, to a private network internal address that can be used in the VPN, thereby generating a second conversion packet. | 04-14-2011 |
20110200005 | METHOD OF SUPPORTING MOBILITY USING SECURITY TUNNEL - Enclosed is a method of supporting mobility using a security tunnel. For the movement of a terminal in a local network and the movement of a terminal to an external network, an active tunnel and a standby tunnel are set to provide mobility to the terminal. When the local network moves, mobility for the local network is provided. The stability of a network is guaranteed using security connection. | 08-18-2011 |
20130110913 | APPARATUS AND METHOD FOR PROVIDING DISTRIBUTED CLOUD SERVICE | 05-02-2013 |
20130163610 | PACKET FORWARDING STRUCTURE AND METHOD FOR SUPPORTING NETWORK BASED CONTENT CACHING OF AGGREGATE CONTENTS - Provided is a packet forwarding structure for supporting network based content caching of aggregate contents. The packet forwarding structure includes: a forwarding table including forwarding information on a content in order to forward a request packet from a terminal; a request list table transmitting the request packet to a destination node according to the forwarding table when the request packet arrives; a content caching information table including the forwarding table, the request list table, and position information on where a content cashed based on a content ID or a content name is stored; and a content server function block storing the cached content. | 06-27-2013 |
20130294420 | METHOD AND APPARATUS FOR CONTROLLING ACCESS IN WIRELESS NETWORK - In controlling channel access from a plurality of terminals in a wireless network, information for wireless resource allocation for each of the terminals is acquired, and channel access time for each terminal is determined based on the information for wireless resource allocation. Then, frames each containing the channel access time determined for each terminal are sequentially transmitted. | 11-07-2013 |
20140082135 | APPARATUS AND METHOD FOR PROVIDING CONTENT, AND SYSTEM FOR PROVIDING CONTENT WITH THE SAID APPARATUS - The present invention provides content providing apparatus and method and a content providing system which maintains a compatibility with an IP network and deliver a content with a complete distributed architecture excluding the content synchronizing process and the request routing process which delivers the content. | 03-20-2014 |
20140112142 | METHOD OF FORWARDING PACKET AND APPARATUS THEREOF - Provided are a method of packet forwarding and an apparatus therefor. In the method, a method performed in a network apparatus includes receiving at least one packet, providing the at least one packet to a network controller through a data plane when flow information to forward the at least one packet is not available and receiving a message including the flow information to forward the at least one packet from the network controller through a control plane. Therefore, the method and the apparatus may increase an efficiency of packet forwarding by simplifying procedure of configuring flow rules on newly input packets. | 04-24-2014 |
20140112150 | METHOD FOR PROVIDING QUALITY OF SERVICE IN SOFTWARE-DEFINED NETWORKING BASED NETWORK AND APPARATUS USING THE SAME - Disclosed is a Quality of Service (QoS) providing method and apparatus in a software-defined networking (SDN) based network, the QoS providing method including receiving a first packet of a predetermined flow, searching for forwarding information corresponding to the packet and QoS rule information corresponding to the packet in a forwarding table and a QoS rule table, respectively, transmitting the packet to a controller if the forwarding information and the QoS rule information do not exist in the forwarding table and the QoS rule table, and generating a flow entry corresponding to the packet in a flow learning table based on forwarding information and QoS rule information that are received from the controller, thereby efficiently providing QoS. | 04-24-2014 |
20140149525 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING INSTANT MESSAGE - In a case where a transmitting apparatus transmits an instant message, for the generated message, an alert command mode in which it is instructed to perform alert processing when a receiving apparatus receives the message or a no alert command mode in which it is instructed not to perform the alert processing when the receiving apparatus receives the message are set up. Then, the receiving apparatus performs the alert processing when the alert command mode is set up for the received message and does not perform the alert processing when the no alert command mode is set up for the received message. | 05-29-2014 |
20140307605 | DATA TRANSMISSION METHOD OF MULTI-HOP NETWORK AND DEVICE USING THE SAME - There are provided a data transmission method of a multi-hop network and a device using the same. The data transmission method of the multi-hop network according to the invention may include receiving information on the multi-hop network, receiving a predetermined desired communication reliability (DCR) of data transmission from a source node to a sink node, determining a single-hop packet transmission rate of each node from the source node to the sink node satisfying the predetermined desired DCR based on the information on the multi-hop network, and notifying each node configuring the multi-hop network of the single-hop packet transmission rate of each of the nodes. In the method and device according to the invention, it is possible to satisfy the DCR required for the multi-hop network and decrease energy consumption by minimizing the total number of transmitted packets. | 10-16-2014 |
20140313898 | METHOD FOR DELIVERING EMERGENCY TRAFFIC IN SOFTWARE DEFINED NETWORKING NETWORKS AND APPARATUS FOR PERFORMING THE SAME - Disclosed are a method for delivering emergency traffic in a SDN based network and an apparatus performing the same. A method for delivering emergency traffic, performed in a controller, may comprise generating an emergency code for delivering the emergency traffic when an emergency state corresponding to a predefined type occurs; transmitting the emergency code to a first OpenFlow switch connected to a transmitting terminal transmitting the emergency traffic; and transmitting a message directing an update of the emergency code to at least one OpenFlow switch included in a forwarding path of the emergency traffic. Therefore, when an emergency state occurs in a network, emergency traffic corresponding to the emergency state may be delivered efficiently, and stabilities of network management and service qualities may be guaranteed accordingly. | 10-23-2014 |