Electronics and Telecommunications Research Institute

Nam Seok Ko

Jae Ho Kim

Sung Kee Noh

Jong Dae Park

Sung Back Hong

Hwan Jo Heo

Sung Hyuk Byun

Kyeong Ho Lee

Soon Seok Lee

Dong Yong Kwak

Woo Sug Jung

Byung Ho Yae

Tae Soo Chung

Sung Jin Moon

Chang Hyun Lee

Sang Ho Lee

Tae Whan Yoo

Seung Hyun Yoon

Changki Kim

Sun Me Kim

Seong Mo Moon

Ji Young Kwak

Jea Hoon Yu

No Ik Park

Dong Il Seo

Sae Hoon Kang

Soo Myung Park

Sang Ki Kim

Ji Soo Shin

Pyung-Koo Park

Seungwoo Hong

Hyunjoo Kang

Quang Tung Thai

Dong Ii Seo

Disclosed herein are a method for protecting data for information centric in-network computing and a system using the same. The method includes: preparing, at a computing node, a an encryption key pool that includes a security key for sharing a symmetric key used for encrypting result data according to a user's request and matching information; preparing, at an INC agent receiving the user's request, a synchronization key pool for sharing the security key through the matching information; and creating, by the computing node, a processor for executing output processing of the result data and allocating a security key to the processor based on the matching information of the encryption key pool when a security key exists. The security key is allocated to the computing node which is determined to perform the request in the INC agent.

Method for protecting data for information centric in-network computing and system using the same

The present invention relates to a method for announce-pull data broadcasting in a blockchain based on information-centric networking (ICN). The present invention includes, transmitting announcement messages to notify having any data in the format of an ICN Interest packet, by a blockchain node, to the blockchain node's peers; receiving, by the blockchain node, data request messages, which request the data, from the blockchain node's peers, wherein data request messages for the same ICN Data packet receiving from multiple blockchain nodes can be aggregated at a middle ICN node; and transmitting, by the blockchain node, the ICN Data packet corresponding to the data request message to the blockchain node's peers, wherein the ICN Data packets can cached at the middle ICN node.

Method and apparatus for blockchain based on information-centric networking

Disclosed herein a method for configuration of semi-managed DHT based on NDN and system therefor. The method includes: managing and sharing manager nodes based on global information; generating a sub-range segment by partitioning a keyspace area, according to each group of the data peer nodes; managing the sub-range segment by distributing the sub-range segment corresponding to each group to data peer nodes of the each group; checking and analyzing liveness of the data peer node in the each group; estimating availability of the data peer nodes by predicting lifetime of data peer nodes through the checking and analyzing of liveliness; performing risk factor prediction that estimates data availability and sub-range management overhead; and performing a sub-range management decision at each of the manager nodes based on a result of the risk factor prediction, and performing a global stabilization decision required for global system stabilization.

Method for configuration of semi-managed DHT based on NDN and system therefor

Provided are an electronic device and method for managing a decentralized identifier (DID) and more specifically a device and method for managing a DID by giving authority over the DID to a user according to a priority level selected by the user.

Decentralized identifier management via blockchains

An off-chain data storage method and apparatus for supporting the integrity and capacity scalability of a data object stored in an off-chain storage. The off-chain data storage method includes collecting a plurality of transactions for a plurality of data objects, creating a root transaction on the basis of a Merkle root of a Merkle tree created based on the collected transactions, and storing the root transaction in a blockchain storage.

Method and apparatus for storing off-chain data

A network infrastructure system implements data sharing and processing by using a network infrastructure to which an application terminal or application server constituting an application domain is connected in a shared manner, includes a plurality of network infrastructure nodes storing, processing, sharing data, wherein each of the plurality of network infrastructure nodes includes a data processing module including a data transfer function, a data distribution function, a data processing function, and a data sharing function which are provided to at least one of the application terminal and the application server.

Network infrastructure system and method for data processing and data sharing using the same

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.

Apparatus and method for providing content with a distributed architecture, and system for providing content with the said apparatus

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.

Packet forwarding structure and method for supporting network based content caching of aggregate contents

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.

Method for providing quality of service in software-defined networking based network and apparatus using the same

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.

System and method for providing IPTV service

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.

Device and method for providing forwarding information and QOS information in flow based network environment

A communication method for using bandwidth efficiently in Internet protocol version 6 (IPv6) is provided to minimize use of header information that is added when the terminal is moved. According to the present invention, while maintaining compatibility between general terminals that conform to the mobile IPv6, bandwidth can be more efficiently used for terminals supporting functions defined in the present invention.

Communication method for using bandwidth efficiently in internet protocol version 6

An apparatus and a method for providing a QoS for a multi protocol label switching (MPLS) traffic are provided. According to the apparatus and the method, a label and an experimental (EXP) are extracted from an MPLS packet input to an MPLS network system, and then applied to a predetermined hash function to generate at least one hash value. Also, a QoS policy is applied to an MPLS session, and the MPLS packet is forwarded. Therefore, the QoS for transmitting the MPLS packet input to the MPLS network system can be ensured.

Apparatus and method for providing QoS for MPLS traffic

Provided is a QoS providing method using a flow label in providing multimedia service in an IPv6 network and a system applying the same. According to the method, a signal connection server extracts session information from a communication request response signal transmitted from a destination in response to a communication request signal of a source, and transmits the extracted session information to a QoS provisioning server. The QoS provisioning server receives the session information, and generates a session key including flow label, and sets QOS information corresponding to the session key. The QoS provisioning server transmits the session key and the QoS information to an IPv6 node, and transmits QoS provisioning completion information to the signal connection server. When the signal connection server receives the QoS provisioning completion information, the signal connection server transmits the received communication request response signal to the source. The IPv6 node forwards an introduced packet on the basis of the transmitted session key and the QoS information.

Method for providing QoS using flow label in providing multimedia service in IPv6 network and system applying the same

Provided are a packet scheduling system and method capable of fair link resource distribution among a plurality of sessions requesting transmissions to an identical output link in input and output interfaces of a node in a high-speed packet exchange network such as an ATM network or the Internet. The packet scheduling system uses a traffic classifier which classifies traffic input from a plurality of input links, for each session; a central management unit which manages the agreed speed for each session and the virtual time of a system; a virtual finish time calculation unit which in response to the agreed speed and the system virtual time, calculates the virtual finish time of each packet for the traffic and attaches the calculated virtual finish time to the head of the packet as a time stamp. A packet queue which stores the packet sent by the virtual finish time calculation unit, for each session; and a packet transmission unit selects and outputs a packet having a shortest virtual finish time among packets stored in the packet queue.

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Daejeon, South Korea

Nam Seok Ko