Patent application number | Description | Published |
20100027508 | FAST HANDOVER METHOD AND SYSTEM USING NETWORK-BASED LOCALIZED MOBILITY MANAGEMENT - The present invention relates to a method in which a mobile node having mobility performs handover in a mobile communication system, and more particularly, to a fast handover method and system using network-based localized mobility Management. According to an exemplary embodiment of the present invention, in a network access process between a mobile node and a base station, the base station sends a message allowing network access to the mobile node and a link-up message to an access router. Then, the access router sends a location registration message, which includes a mobile node identifier, a target base station identifier, a localized mobility anchor identifier, and access permission flag information, to a localized mobility anchor (LMA), and receives an acknowledgement (Ack) message including network prefix information. Accordingly, when a router advertisement (RA) message is sent to the base station, the mobile node performs duplicate address detection (DAD). Accordingly, fast handover is performed to reduce packet loss and delay that occur when the mobile node moves between networks, thereby minimizing the packet loss and delay. | 02-04-2010 |
20100144359 | APPARATUS AND METHOD FOR ALLOCATING IN WIRELESS COMMUNICATION SYSTEM - An apparatus for allocating resources in a wireless communication system includes: a verification unit configured to receive channel information and base station information of a system, verify from the channel information the number of channels capable of being used in the system and bandwidths of the channels, and verify from the base station information the number of base stations and bandwidths of channels requested by the base stations to be allocated; an allocation unit configured to allocate at least one channel of the channels capable of being used to each base station in response to verification by the verification unit; and a generation unit configured to generate allocation information corresponding to channel allocation by the allocation unit and transmit the allocation information to the base stations. | 06-10-2010 |
20100232306 | METHODS FOR SUPPORTING IPv6 USING BRIDGE EXTENSION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for supporting Internet Protocol version 6 (IPv6) in a wireless communication system. According to an exemplary embodiment of the present invention, a wireless communication system consists of an access router, a bridge, and a base station. The access router allocates a common network prefix to all subscriber stations served by it. When receiving IP multicast data destined for all nodes on the same link, the access router forwards the data back to the bridge. The bridge transmits IP multicast data with reference to an identification cache table (ICT) which includes MAC addresses of each subscriber stations, identifiers for point-to-point connections between the bridge and base station, IPv | 09-16-2010 |
20100260171 | METHOD AND APPARATUS FOR PROCESSING NUMBER PORTABILITY IN INTERNET PHONE - The present invention relates to a method and apparatus for processing a number portability call and a request for number portability in a VoIP, wherein a VoIP network access to a L-NPDB of each communication carrier to process the number portability call. Especially, to process a number portability call and request for number portability between various types of communication network such as VoIP networks, wired phone network, and mobile network, the apparatus includes an mobile number portability management system comprised of computer systems such as an NPDB, DB system where a VoIP carrier accesses, a router, an NPMS, and the like, a computer system of a VoIP network which can access and search the NPDB to process a phone call in VoIP network or can performs a relay-access of the phone call, and a switch board. | 10-14-2010 |
20110064049 | METHOD OF HANDOVER BETWEEN COMMUNICATION NETWORK AND BROADCAST NETWORK FOR PROVIDING BROADCAST CONTENT, COMMUNICATION NETWORK HANDOVER CONTROLLER, AND BROADCAST NETWORK HANDOVER CONTROLLER - Provided is a method for performing handover between a communication network and a broadcast network by a handover controller of a first network corresponding to either the communication network or the broadcast network. The method for performing handover includes: searching for a second network capable of providing the same broadcast content broadcasted over the first network; performing a handover preparation procedure between the communication network and the broadcast network with a handover controller of the second network; delivering the broadcast content broadcasted over the first network to the handover controller of the second network; and sending a message requesting a terminal to watch, over the second network, the broadcast content broadcasted over the first network. | 03-17-2011 |
20110103304 | PACKET BUFFERING METHOD AND APPARATUS FOR REDUCING PACKET LOSS IN PROXY MOBILE IPv6 - Disclosed are a packet buffering apparatus and method for reducing packet loss in a proxy mobile IPv6, which include a first Mobile Access Gateway (MAG) requesting a Local Mobility Anchor (LMA) for packet buffering when outgoing Mobile Node (MN) being served by the MAG is detected, and the LMA for buffering the packet transmitted to the corresponding MN when receiving a request for the packet buffering. | 05-05-2011 |
20110153149 | COMMUNICATION APPARATUS AND METHOD FOR VEHICLE USING IPv6 NETWORK - A communication apparatus for a vehicle using an Internet protocol version 6 (IPv6) network is disclosed. The communication apparatus may include at least one Electronic Control Unit (ECU) having an IPv6 network communication function, and a vehicle gateway to support vehicle internal communication network to communicate with the at least one ECU and to support vehicle external communication network for a communication with a terminal of a service provider. | 06-23-2011 |
20110195743 | METHOD AND APPARATUS FOR POWER MANAGEMENT - In an apparatus and a method for power management, it is possible to minimize power consumption by starting an application service by selectively using a heterogeneous network interface of a terminal mounted with a plurality of heterogeneous networks. | 08-11-2011 |
20110206002 | METHOD AND APPARATUS FOR HANDOVER BETWEEN COMMUNICATION NETWORK AND BROADCAST NETWORK - An exemplary embodiment of the present invention provides a method of commanding, by a handover control apparatus, a group of terminals to perform handover from a broadcasting network to a communication network, the method comprising generating a handover indication message including service information for identifying the group of terminals and transmitting the handover indication message to the group of terminals. | 08-25-2011 |
20130215756 | APPARATUS AND METHOD FOR MANAGING CONTENTS CACHE CONSIDERING NETWORK COST - Provided is a content cache managing method and apparatus, and more particularly, a method and an apparatus for managing a content cache by considering network cost in a network. A content cache managing method of transmission equipment that forwards a content data packet may include calculating a cache replacement factor value by using network cost that is incurred in a network path from the transmission equipment to an original content server storing original content data, based on the content data packet that the content data packet is received from neighboring transmission equipment, and managing a cache in the transmission equipment based on the calculated cache replacement factor value or a state of cache in the transmission equipment to store the content data packet. | 08-22-2013 |
20140006449 | SYSTEM FOR INTEROPERATING DHT-BASED OVERLAY NETWORKS AND METHOD THEREOF | 01-02-2014 |
20140023072 | PACKET PROCESSING DEVICE FOR IP-BASED INFORMATION-CENTRIC NETWORK - Provided is a packet processing device for an information-centric network. The packet processing device includes a packet transceiver configured to transmit and receive packets, and a packet processing unit configured to process a transmitted or received packet including a forwarding identifier that identifies information present in the ICN and corresponds to an IP address of a network node holding the information, and at least one sub-identifier that identifies child information of the information, in which the forwarding identifier is used to forward packets. | 01-23-2014 |
20140078936 | APPARATUS FOR CONFIGURING OVERLAY NETWORK AND METHOD THEREOF - Disclosed are an apparatus for configuring an overlay network and a method thereof. An apparatus for configuring an overlay network may include a network configuring device collecting topology information and bandwidth information of a physical network and configuring one logical network including a plurality of predetermined nodes by using the collected topology information and bandwidth information of the physical network; and a storage device storing the topology information and bandwidth information of the physical network. | 03-20-2014 |
20140079067 | INFORMATION CENTRIC NETWORK (ICN) NODE BASED ON SWITCH AND NETWORK PROCESS USING THE NODE - The present invention relates to an apparatus for supporting information centric networking. An information centric network (ICN) node based on a switch according to the present invention includes an ICN process configured to request information for providing content desired by a user or process an ICN protocol for responding to the requested information; a line card configured to transfer a received packet to the ICN process by recognizing a header format of the packet and, or output the received packet by determining an output port; and a switch module configured to relay a transfer of the packet between the line cards. | 03-20-2014 |
20140089454 | METHOD FOR MANAGING CONTENT CACHING BASED ON HOP COUNT AND NETWORK ENTITY THEREOF - Disclosed is hop-count based content caching. The present invention implements hop-count based content cache placement strategies that efficiently decrease traffics of a network by the routing node's primarily judging whether to cache a content chunk by grasping an attribute of the received content chunk; the routing node's secondarily judging whether to cache the content chunk based on a caching probability of ‘1/hop count’; and storing the content chunk and the hop count information in the cache memory of the routing node when the content chunk is determined to cache the content chunk as a result of the secondary judgment. | 03-27-2014 |
20140136647 | ROUTER AND OPERATING METHOD THEREOF - An exemplary embodiment provides a router including: a number calculating unit configured to count an accumulated request number corresponding to a plurality of previously requested contents and a request number of a request signal for an arbitrary content which is currently input; a probability calculating unit configured to calculate an arbitrary probability value for the arbitrary content based on the accumulated request number and the request number; and a policy determining unit configured to determine whether to store the arbitrary content which is provided to an arbitrary terminal which transmits the request signal from an arbitrary content server, based on the arbitrary probability value and a set reference probability value. | 05-15-2014 |
20140149531 | SYSTEM AND METHOD OF PROVIDING CONTENTS WITH TIC SERVER AND CDN - The present invention relates to a content providing system and method combining a transparent Internet cache (TIC) server and a content delivery network (CDN), and more particularly, to a content providing system and method that may overcome limitation on capacity of a cache storage found in a TIC service and may also overcome limitation on service transparency found in a CDN service. According to the present invention, it is possible to overcome limitation on capacity of a cache storage found in an existing TIC service and to overcome limitation on service transparency found in a CDN by combining a TIC server and the CDN. | 05-29-2014 |
20140164608 | CONTENT TRANSMISSION SYSTEM - In order to easily prevent traffic of a content data server, which provides an arbitrary content, from being overloaded, the content transmission system according to an exemplary embodiment includes a content data server which provides an arbitrary content to a plurality of terminals when a request signal for the arbitrary content is input from the plurality of terminals, a data control server which when the arbitrary content is provided, monitors whether the traffic of the content data server is overloaded and if the traffic is overloaded as a result of monitoring, generates a traffic distribution request signal, and a node control server which when the traffic distribution request signal is input from the data control server, controls to provide the arbitrary content to an arbitrary distribution node, which satisfies a setting standard among a plurality of distribution nodes, to be provided to an arbitrary terminal among the plurality of terminals. | 06-12-2014 |
20140189793 | VIRTUAL FILE SYSTEM FOR INTERWORKING BETWEEN CONTENT SERVER AND INFORMATION-CENTRIC NETWORK SERVER AND OPERATING METHOD THEREOF - Disclosed is a virtual file system for interworking between a content server and an information-centric network server, the system including: a file system function processing unit configured to process a file operation for a predetermined content requested from a plurality of content service protocols; a cache control unit configured to process the content requested through the file operation by managing a cache in a node; and a protocol matching unit configured to process the content requested through the file operation by interfacing with a plurality of content transfer protocols. | 07-03-2014 |
20140317271 | METHOD AND NODE APPARATUS FOR COLLECTING INFORMATION IN CONTENT NETWORK BASED ON INFORMATION-CENTRIC NETWORKING - In a content network over which a plurality of smart nodes is coupled, each smart node receives advertisement messages broadcasted by adjacent smart nodes. The advertisement message may be one of a link state advertisement (LSA) message including link state information indicative of a link that is a network interface, a server state advertisement (SSA) message including server state information indicative of a data storage state and a processing state of a processing unit of the smart node, and a content state advertisement (CSA) message including content state information indicative of content stored in the smart node. Each smart node updates its own database based on the information included in the received advertisement message. | 10-23-2014 |
20140317272 | METHOD OF COLLECTING INFORMATION, CONTENT NETWORK MANAGEMENT SYSTEM, AND NODE APPARATUS USING MANAGEMENT INTERFACE IN CONTENT NETWORK BASED ON INFORMATION-CENTRIC NETWORKING - In a content network over which a plurality of smart nodes is coupled, a content network management system receives information response messages including pieces of management interface base (MIB) information from smart nodes. Next, the content network management system classifies the pieces of MIB information included in the received response messages into server resource information, topology information, and network resource information, and stores and manages the pieces of information. | 10-23-2014 |