Abstract: Provided is a wastewater purification method, the method including: supplying a first mixed stream, in which an acid component and wastewater including water, a nitrile-based monomer, and ammonia are mixed, to a first column; recovering the nitrile-based monomer from an upper discharge stream from the first column; supplying a second mixed stream, in which a lower discharge stream from the first column and a base component are mixed, to a second column; and recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater.

Abstract: 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.

Abstract: According to an embodiment of the present disclosure, a network function of performing session management in a mobile communication system, the network function comprising: a memory configured to store at least one program; a transceiver unit configured to transmit and receive at least one signal; and a processor configured to execute at least one program stored in the memory, wherein the processor performs session establishment based on a terminal request, allocates at least one uplink tunnel endpoint ID (TEID) and at least one downlink TEID based on the session establishment, determines an uplink segment routing (SR) route and a downlink SR route based on segment routing IPV6 (SRv6), and performs SR route setup for at least one network function based on the determined uplink SR route and the determined downlink SR route.

Abstract: An apparatus for establishing a traffic path and forwarding an established traffic path in a mobile communication system is provided, which includes: a memory storing at least one program; a transceiver transmitting and receiving at least one signal; and a processor executing at least one program stored in the memory, wherein the processor is configured to: obtain at least one of topology information and load information, compute a traffic path for each application based on at least one of the topology information and the load information, and generate a routing identification (RID) for each application based on the computed traffic path.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed herein a method and system for optimizing content removal from content store in NDN. The method includes: search the content store when receiving a request interest packet from a consumer; generating an optimization table when receiving the request interest packet; receiving first data corresponding to the request interest packet from a producer; storing the first data in the content store; setting an entry hit rate and a threshold; and deleting the stored first data based on the set entry hit rate and the set threshold.

Abstract: According to an embodiment of the present disclosure, there is provided a method for providing a virtual private network service in ICN name-based networking. The method comprising: receiving an interest packet; checking whether or not the interest packet includes a forwarding hint; checking, when the interest packet includes the forwarding hint, whether or not the forwarding hint includes a specific keyword; generating, when the forwarding hint includes the specific keyword, a VRF ID by extracting a VRF name from a name of the interest packet; selecting an FIB by using the generated VRF ID; executing a lookup for the FIB by using an interest name extracted from the interest packet; determining an output port by using the lookup; and transmitting the interest packet to the output port.

Abstract: Disclosed herein a source routing apparatus and method in ICN. The method includes: receiving an interest packet; extracting a current entry value when the received interest packet includes a forwarding hint; using the extracted current entry value as an index of a path list; extracting a name of the interest packet; reducing the current entry value when the interest packet is transmitted to a network area of the path list; performing a FIB lookup with the extracted name; determining an output port using the FIB lookup; and transmitting the interest packet to the output port.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed herein is a method for content caching in an individual node constituting a named data networking system, and an individual node determines whether or not to store data in its CS based on a node count and a cache level and based on a determination result, delivers the data to a next node after storing or without storing the data in a CS.

Abstract: 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.

Abstract: The present invention relates to an apparatus and method for returning execution result of function in name-based in network distributed computing system. The present invention includes sending a first packet requesting execution of a function to a first node; transmitting a second packet requesting the execution result of the function to a second node; and receiving, after transmitting the second packet, a third packet, which comprises the execution result of the function, from the second node.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed herein is a system for a secret sharing authentication. The system may include a secret sharing information management server, a client device, and a network device. The secret sharing information management server may store and manage an authentication key capable of being used for secret sharing authentication, by dividing the authentication key into a first secret sharing key shard and a second secret sharing key shard, and allocate the first and second secret sharing key shards. The client device may receive the first secret sharing key shard from the secret sharing information management server and construct an interest packet by using the first secret sharing key shards.

Abstract: 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.

Abstract: 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.