Patent application number | Description | Published |
20080316920 | Apparatus and Method for Multi-Protocol Label Switching Label-Switched Path Protection Switching - Provided are system and method for multi-protocol label switching (MPLS) label-switched path (LSP) protection switching in an MPLS system employing a working LSP and a protection LSP in a 1:1 mode, the apparatus and method prepare a dedicated LSP for one working LSP and are capable of rapidly processing a forward defect indication (FDI)/backward defect indication (BDI) signal when a failure occurs on the working LSP. The system includes: an ingress node multicasting input MPLS traffic through the working LSP and the protection LSP using a fed-back BDI signal; a transit node relaying the MPLS traffic input from the ingress node, and generating a FDI signal when the failure occurs; and an egress node extracting the MPLS traffic from the MPLS LSP input from the transit node, and when the FDI signal is detected, inserting and feeding back the BDI signal to the ingress node through a return path and performing switching to the protection LSP. | 12-25-2008 |
20090132635 | TERMINAL SHIFT MANAGEMENT SYSTEM AND METHOD THEREOF - The present invention relates to a terminal control system, and more particularly, to a system and a method which allows a user to shift an IP service from a terminal to which the service is currently provided to a user's other terminal, thereby enabling the user to continuously using the IP service without disconnection. The system comprises: an authentication authorization accounting (AAA) interface unit which receives unique information having fixed properties with respect to a terminal authenticated by a subscriber terminal authentication system and a user of the authenticated terminal; a terminal interface unit which receives status information having variable properties with respect to the authorized terminal and a currently used service; a unique information managing unit which stores and manages the unique information; a status information managing unit which stores and manages the status information; and a terminal shift management control unit which provides information regarding terminals available for the current service with reference to the unique information and the status information, when there is a terminal shift request, generates service session information which is required when the currently used service is sent to a terminal selected from the information and sends the generated service session information to the selected terminal to which the service is to be shifted. Accordingly, the user of the terminal can conveniently change the terminal to continuously use the IP service without disconnection while using the IP service. | 05-21-2009 |
20090147672 | PROTECTION SWITCHING METHOD AND APPARATUS FOR USE IN RING NETWORK - A protection switching method and apparatus for use in a ring network are provided. At least two switching request signals are received from a network device neighboring a link in which a failure occurs. A switching operation is performed in response to a first received signal of the at least two received switching request signals. When a network failure occurs, fast protection switching can be performed. | 06-11-2009 |
20090150929 | METHOD AND APPARATUS FOR PROVIDING PERSONALIZED ADVERTISEMENTS IN INTERNET PROTOCOL TV (IPTV) SYSTEM - Provided are an apparatus and method for providing an advertisement service personalized for each user or for each group. The personalized advertisement providing method includes: a personalized advertisement providing method which is used in an Internet Protocol Television (IPTV) System, including: receiving at least one broadcasting program of a plurality of broadcasting programs classified according to a plurality of channels; and determining whether a present time is an advertisement broadcasting time, transmitting a received broadcasting program to a plurality of user terminals which selects a channel on which the broadcasting program is provided if the present time is not an advertisement broadcasting time, dividing the plurality of user terminals into a plurality of groups and transmitting an advertisement classified for each group to one or more user terminals belonging to the group if the present time is an advertisement broadcasting time. Therefore, it is possible to enhance use efficiency of bandwidths, to reduce restrictions related to installation, etc. of an apparatus for providing advertisement services, and to reduce the number of apparatuses that have to be installed, resulting in reduction of costs. | 06-11-2009 |
20090150945 | METHOD AND APPARATUS FOR PROVIDING VIDEO-ON-DEMAND SERVICE BASED ON INTERNET PROTOCOL (IP) MULTIMEDIA SUBSYSTEM - A method and apparatus for providing a video-on-demand (VOD) service are provided. The VOD service providing method includes: receiving a media setup request message from a user terminal, converting the media setup request message using a second protocol which is different from a first protocol on which the media setup request message is based, transmitting the converted media setup request message through a transmission network, receiving a response message in response to the converted media setup request message through the transmission network, converting the response message using the first protocol on which the media setup request message is based, and transmitting the response message to the user terminal; and converting the converted media setup request message received through the transmission network using the first protocol on which the media setup request message is based, transmitting the newly converted media setup request message to a VOD streaming server, converting the response message from the VOD streaming server using the second protocol, and transmitting the converted response message through the transmission network. Therefore, by preventing overlap of control processes, which may both be initiated when two protocols are used together, it is possible to efficiently perform controlling of a VOD service. | 06-11-2009 |
20090154394 | CALL CONTROL METHOD FOR SEAMLESS MOBILITY SERVICE - A call control method for an Internet Protocol (IP)-based mobility service is provided. The call control method for ensuring service continuity in a mobile communication service environment, includes: receiving a call signal message including permanent IP addresses and transport IP addresses from a transmitter terminal and a receiver terminal, and acquiring the permanent IP addresses and the transport IP addresses of the transmitter terminal and the receiver terminal; and performing call control between the transmitter terminal and the receiver terminal on the basis of the transport IP addresses and the permanent IP addresses of the transmitter terminal and the receiver terminal. Therefore, by interfacing with an IP multimedia subsystem (IMS) for controlling a Session Initiation Protocol (SIP)-based service, an IP mobility control apparatus for controlling mobility of a terminal when a call is controlled, and a network control apparatus for controlling a network, it is possible to prevent data transmission from being interrupted while the terminal is moving, thereby providing an IP-based seamless, high-quality service. | 06-18-2009 |
20090154422 | METHOD OF PROVIDING SEAMLESS QOS GUARANTEES IN INTERNET PROTOCOL (IP) NETWORK WHEN IP-BASED MOBILITY SERVICE IS PROVIDED - Provided is a method of providing an Internet Protocol (IP)-based mobility service, particularly, a method of providing seamless quality of service (QoS) guarantees when an IP-based mobile service is provided. The seamless QoS management method includes: a method of providing seamless QoS guarantees when an Internet Protocol (IP)-based mobility service is provided, including: determining whether a terminal is newly registered in a network connecting unit; and providing QoS information of the newly registered terminal to the network connecting unit. Therefore, a user can successively receive a Service Level Agreement (SLA)-based service for which he or she subscribes, while moving to other places. | 06-18-2009 |
20100135298 | METHOD AND SYSTEM FOR PROVIDING SOURCE SPECIFIC MULTICAST SERVICE ON ETHERNET NETWORK - There are provided a method and a system for providing a source specific multicast service on an Ethernet network. The system includes: a router managing a subscriber; a user terminal transmitting an IGMP packet to the router and transmitting channel reception information that uses an MAC address of the router as a destination MAC address; and an Ethernet switch receiving the channel reception information from the user terminal, determining whether there is a channel subscriber in a port to which the channel reception information has been input based on the contents of the channel reception information, and then outputting a frame that has a channel MAC address, which is the same as that of the channel reception information, as a destination address to the input port in a case where there is a channel subscriber in the input port. | 06-03-2010 |
20100138920 | METHOD AND SYSTEM FOR DETECTING AND RESPONDING TO HARMFUL TRAFFIC - There is provided a method and system for detecting and responding to harmful traffic. The system includes a router determining whether or not received data is harmful traffic, by using a dynamic flow identification (DFI) function and a deep packet inspection (DPI) function, sending Cflowd information of the received data, and then encapsulating the received data when the received data is determined to be harmful traffic, a policy & resource control entity receiving the Cflowd information from the router, determining whether or not the received data is harmful traffic by using the received Cflowd information, and then sending a result of the determination to the router, and a security management server receiving the encapsulated data from the router, reconfirming whether or not the encapsulated data is harmful traffic, and then processing the encapsulated data. | 06-03-2010 |
20100142380 | MULTICASTING METHOD IN NETWORK INCLUDING T-MPLS NETWORK AND WDM NETWORK AND APPARATUS THEREFOR - A multicasting method and apparatus in a network including a transport multiprotocol label switch (T-MPLS) network and a wavelength division multiplexing (WDM) network are disclosed. At least one of first switches, connected to the T-MPLS network, second switches connected to the WDM network, and a switch hub establishes a multicasting path by using a label switch path (LSP) ID and a label switch router (LSR) ID, in which the first switch on the multicasting path multicasts a T-MPLS signal, the switch hub converts the T-MPLS signal into an optical multicasting signal and multicasts the converted optical multicasting signal, and the second switch receives the optical multicasting signal and multicasts it in units of the T-MPLS signal. | 06-10-2010 |
20100146591 | CONVERGED ACCESS CONTROL METHOD USING NETWORK ACCESS DEVICE AT PENETRATION NODE OF IP NETWORK OF CONVERGENCE ALL-IP NETWORK - There is provided a converged access control method using a network access device at an edge node of an IP network of a convergence ALL-IP network that performs authentication control, QoS control, traffic control and mobility control in a consistent manner using a network access device located at penetration nodes of an IP network of a convergence ALL-IP network to effectively accommodate a subscriber network in various access environments, thereby ensuring network flexibility and scalability. | 06-10-2010 |
20100157892 | MOBILITY SUPPORTING METHOD - Provided is a mobility supporting method of a mobile router. The method includes generating an area identifier to identify an open shortest path first area; and transmitting routing information including the area identifier to an access router. | 06-24-2010 |
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 |
20110069606 | COMMUNICATION NODE AND METHOD OF PROCESSING COMMUNICATION FAULT THEREOF - A communication node detects a communication fault thereof, and when a communication fault is detected, the communication node determines whether the communication node is included in a transmission path of a data packet with reference to a routing table and transmits the stored communication fault notification message to peripheral communication nodes. | 03-24-2011 |
20110072515 | METHOD AND APPARATUS FOR COLLABORATIVELY PROTECTING AGAINST DISTRIBUTED DENIAL OF SERVICE ATTACK - A method and apparatus for collaboratively protecting against a Distributed Denial of Service (DDoS) attack are provided. The method performed by a network apparatus includes detecting data suspected as being used in the DDoS attack by monitoring traffic forwarded to a service server, notifying a security apparatus that the detected data is suspected as being used in the DDoS attack, and performing at least one of a first operation and a second operation, the first operation being receiving an analysis result for the detected data from the security apparatus and controlling the traffic based on the analysis result, and the second operation being controlling, prior to the first operation, the traffic based on a rule set in advance. | 03-24-2011 |
20110080830 | DEVICE AND METHOD FOR PROVIDING FORWARDING INFORMATION AND QOS INFORMATION IN FLOW BASED NETWORK ENVIRONMENT - A device for providing forwarding and QoS information in a flow based network environment acquires first information and second information from a flow table therein on the basis of status information of a predetermined flow in order to provide dynamically updated information in a flow based network environment. When it is determined that first information and second information acquired based on a route ID of a series of information are updated, the flow table is updated and the updated information is provided. | 04-07-2011 |
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 |
20110082941 | METHOD OF PROVIDING DIRECT COMMUNICATION IN INTERNET PROTOCOL NETWORK - In order for a peer node to perform direct communication with a correspondent peer node in an Internet protocol network, the peer node receives a virtual address of the correspondent peer node from a server, and then when the peer node can directly set a tunnel with the correspondent peer node, the peer node sets a tunnel with the correspondent peer node, and when the peer node cannot directly set a tunnel with the correspondent peer node, the peer node sets a tunnel with a tunnel repeater. Thereafter, the peer node connects a virtual address of the correspondent peer node as route information to the tunnel. Thereby, a packet using a virtual address of the correspondent peer node as a destination is transmitted to the correspondent peer node through a predetermined tunnel. | 04-07-2011 |
20110085470 | APPARATUS AND METHOD FOR INTEGRATED SIGNAL PROCESSING FOR IP-BASED CONVERGENCE NETWORK - In an apparatus and method for integrated signal processing for an IP-based wired and wireless convergence network, based on an ID of a second user acquired in response to a service call request from a first user terminal, a unique address corresponding to the ID is acquired. The location address corresponding to the unique address, acquired from the address information of the terminals being stored and managed, i.e., the transport address of the second user terminal, is acquired. An IP connection request is sent to the acquired transport address of the second user terminal and the transport address of the first user terminal, and upon completion of the IP connection, data traffic for the requested service is transferred. | 04-14-2011 |
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 |
20110138003 | SYSTEM AND METHOD FOR PROVIDING OFFLINE BASED SIMPLE SOCIAL NETWORK SERVICE - In order to provide an offline-based social network service from a social network service system to a plurality of terminals, an online history identifier corresponding to an offline event is transmitted to a first terminal when an online history identifier creation request message is received from the first terminal that creates the offline events among the plurality of terminals. a participant registration confirming message is transmitted to the first terminal when information on a participant list including a second terminal is received from the first terminal, and the created online history identifier is transmitted to the second terminal, thereby providing the offline-based social network service to the first terminal and the second terminal. | 06-09-2011 |
20120002560 | APPARATUS AND METHOD FOR SELECTING AP IN CONSIDERATION OF NETWORK PERFORMANCE - Performance values between an access point (AP) and one or more networks to which the AP is connected are measured, and performance information is generated based on the measured performance values. When a request for the performance information is received from a terminal connected to the AP, the performance information is broadcast to the terminal at a pre-set time to allow the terminal to select an optimum AP based on the received performance information and attempt to access a wireless network. | 01-05-2012 |
20130128741 | FLOW BASED QOS ROUTER CAPABLE OF REPORTING REAL-TIME STATISTICS - Disclosed is a flow-based QoS router capable of reporting real-time statistics, including: a line card configured to collect flow information by analyzing a flow, classify the collected flow information into flow information not requesting filtering and flow information requesting filtering, and transmit each of the flow information not requesting filtering and the flow information requesting filtering; a system supervisor controller configured to receive the flow information not requesting filtering and the flow information requesting filtering from the line card and store the flow information not requesting filtering and the flow information requesting filtering, and accessed by a manager terminal to monitor the flow information not requesting filtering and the flow information requesting filtering to perform filtering of and QoS application to a predetermined flow; and an application processor configured to command QoS application to the predetermined flow according to a request from the system supervisor controller. | 05-23-2013 |
20130133057 | SYSTEM FOR MANAGING VIRTUAL PRIVATE NETWORK AND METHOD THEREOF - Disclosed are a system for managing virtual private networks (VPNs) includes: terminals configured to transmit user data; a manager configured to transmit information for concealing networks and managing the VPNs; border gateways configured to decrypt the user data and perform a network address translation (NAT) procedure and a filtering procedure on the decrypted user data based on the information; and servers configured to receive the user data subjected to the NAT procedure and the filtering procedure, wherein the filtering procedure is a procedure discarding the user data to be transferred to the servers that are not allowed so as to allow the terminals to access only the allowed servers, the NAT procedure is a procedure changing an Internet protocol (IP) address used in a first network to an IP address used in a second network, and the first network and the second network are different networks. | 05-23-2013 |
20130298220 | SYSTEM AND METHOD FOR MANAGING FILTERING INFORMATION OF ATTACK TRAFFIC - The present disclosure relates to a system and a method for managing filtering information of attack traffic, and more particularly, to a system and a method for managing filtering information of attack traffic that may block attack traffic in a front end from which the attack traffic is transmitted by transmitting traffic filtering information, to a first autonomous system of the front end from which the attack traffic is transmitted, through a border gateway protocol (BGP) and by applying, to a relevant router, the transmitted traffic filtering information in the corresponding first autonomous system, when an edge router of a second autonomous system (AS) positioned in a rear end sets the traffic filtering information by detecting the attack traffic. | 11-07-2013 |
20140094219 | MOBILE COMMUNICATION TERMINAL DEVICE EQUIPPED WITH REPLACEABLE COMMUNICATION MODULE AND BACK COVER THEREOF - A mobile communication terminal device equipped with a replaceable communication module and a back cover thereof are provided. The mobile communication terminal device includes: a host processor configured to control and operate the mobile communication terminal device; a baseband processing unit configured to process a mobile communication protocol; and a radio frequency (RF) signal processing unit configured to wirelessly communicate with a mobile communication network, wherein the host processor, the baseband processing unit and the RF signal processing unit are further configured to be implemented as modules that are attachable to or detachable from a printed circuit board (PCB) of the mobile communication terminal device. | 04-03-2014 |
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 |
20140146668 | APPARATUS OF CONTROLLING DATA TRAFFIC IN PACKET BASED MOBILE COMMUNICATION SYSTEM AND METHOD THEREOF - An apparatus of controlling a data traffic in a packet based mobile communication system and a method thereof according to the present invention are disclosed. The apparatus of controlling a data traffic in a packet based mobile communication system according to another aspect of the present invention includes an extracting unit configured to, if a message which requests to create a dedicated bearer, extract at least one characteristic parameter included in the received message, a determining unit configured to determine whether the dedicated bearer is set through the load distribution gateway based on the at least one extracted characteristic parameter, an already set regulation or condition; and a creating unit configured to create a message which requests to set the dedicated bearer as a result of the determination. | 05-29-2014 |