Electronics and Telecommunications Research Institute

Information & Communications University

Tae Whan Yoo

Hyeong Ho Lee

Hoon Ki Lee

Chan Soo Kim

Jung Hak Kim

Yool Kwon

Bong Tae Kim

Ho Yong Kang

Kyeong Soo Han

Jongtae Song

Jea Hoon Yu

Ho Sook Lee

Je Soo Ko

Seung Hwan Kim

Kwang Ok Kim

Sang Gug Lee

Sun Me Kim

Jee Sook Eun

Hyun Kyun Choi

Sungsoo Kang

Jeong Jin Lee

Man Seop Lee

Ja Won Seo

Hyun Jae Lee

Jong Hyun Lee

Sang Ho Lee

Sang Min Lee

Seung Hyun Yoon

Ho Young Song

Pyeong Jung Song

Nam Seok Ko

Bong-Tae Kim

Ji Wook Youn

Song In Choi

Bup Joong Kim

Junghak Kim

Jeong Dong Ryoo

Sung Hyuk Byun

Dae Ub Kim

Kyeong-Eun Han

Dong Il Seo

Hong Ju Kim

Daeub Kim

Sang Ki Kim

Jong Tae Song

Chansung Park

Jae Geun Kim

Dong Ii Seo

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

Communication method and apparatus based on QoS in network slice-based mobile communication network. The method includes determining whether first sum of bitrate of SDF requested from PDU and a using NSB of network slice corresponding to requested SDF exceeds reference NSB allocated to network slice, determining whether second sum of bitrate of requested SDF and a first using SB of APN corresponding to requested SDF exceeds first reference SB allocated to APN, unless the first sum exceeds the reference NSB, determining whether third sum of bitrate of requested SDF and a second using SB of PDU flow corresponding to requested SDF exceeds second reference SB allocated to PDU flow, unless the second sum exceeds the first reference SB, and processing the requested SDF to guarantee that quality of requested SDF is greater than or equal to a predetermined level, unless the third sum exceeds the second reference SB.

Communication method and apparatus based on quality of service (QoS) in network slice-based mobile communication network

A packet or passive optical network system with packet-based protection switching capabilities is provided. The system performs comprehensive protection switching against failures in all segments of a passive optical network (PON), thereby implementing lossless protection switching against failures in any segment in a packet network and against failures in any segment of the PON that consists of optical line terminals (OLTs), optical cables, optical network units (ONUs) of a PON system.

Packet or passive optical network system with protection switching capabilities

An optical switching control method and apparatus. The method includes generating an optical switching path corresponding to a destination node of service traffic flowing from an external service network, generating an optical frame corresponding to the generated optical switching path, transmitting, to a control server, a request message for requesting an allocation of a time slot to transmit the generated optical frame, generating an optical signal having a predetermined wavelength to transmit the optical frame in response to an admission message being received as a result of admission with respect to the request message, and transferring the optical frame to the destination node based on the optical switching path using the generated optical signal.

Packet-based optical signal switching control method and apparatus

Disclosed herein are a method and an apparatus for configuring a radio resource. In a wireless communication system, a radio resource is split into a plurality of radio resource slices corresponding to different service types and a radio source slice corresponding to a service type among a plurality of radio resource slices that a device requests is determined.

Method and apparatus for configuring radio resource

A method and apparatus for providing a mobility in an Ethernet network. An Ethernet switch receives an Ethernet frame through a port of the Ethernet switch, and transmits the Ethernet frame to an upper Ethernet switch through a root port of the Ethernet switch based on whether a forwarding information for a destination address of the Ethernet frame exists in a forwarding table.

Methods and apparatus for providing mobility in ethernet network

A ring network system includes a plurality of node apparatuses that are sequentially connected through a transmission medium that is formed in a ring form. In the ring network system, the remaining node apparatuses, except for a first node apparatus of the plurality of node apparatuses pass an optical signal that is transmitted from the first node apparatus, and a second node apparatus corresponding to a destination of the optical signal among the remaining node apparatuses, extracts the optical signal while transferring the first optical signal to a next node apparatus of the second node apparatus.

Node apparatus and method of receiving optical signal thereof, and ring network system

A method for managing an Ethernet ring network of a VLAN-based bridge is provided that includes: registering a major-ring VLAN ID (VID) in a ring port filtering database of a ring protection link owner node in accordance with a request for registering the major ring VID from an Ethernet Ring Protection controller mounted on the ring protection link owner node of a major ring; delivering, by the ring protection link owner node, a VID registration message to other nodes which belong to the major ring through a ring port; receiving the VID registration message through the ring port and registering the major ring VID in a ring port filtering database of each node itself, by each node belonging to the major ring; and delivering, by each node belonging to the major ring, the VID registration message to other nodes belonging to the major ring through the ring port.

Method for managing ethernet ring network of VLAN-based bridge

The present invention relates to an apparatus and method of classifying packets that can support a quality of service (QoS) in a network system. An apparatus for classifying packets according to an exemplary embodiment of the present invention includes: a first unit that analyzes input data packets, extracts pluralities of specific fields from the data packets using an analyzed result, and outputs the pluralities of specific fields; pluralities of second units that compare data of a first portion of the pluralities of extracted specific fields with data in a table, determine whether items that satisfy a predetermined condition exist in the table, and output hit signals and pointers indicating positions of the items that satisfy the predetermined condition when the items that satisfy the predetermined condition exist in the table; and a third unit that compares data of a second portion of the pluralities of extracted specific fields and key data including the pointers input from the pluralities of second units and rule data in a rule table and outputs classes corresponding to the items when the key data and the rule data are matched.

Apparatus and method of classifying packets

Provided are method and apparatus for dynamically allocating unlink bandwidth in Ethernet PON. In the method and apparatus, report value, which are received for each logical link identifications (LLID), is controlled to be less than a maximum gate value set for each LLID in sequence for all of LLIDs without a predetermined interval. A gate having a length corresponding to the restricted report value is generated. LLIDs are grouped into classes and processing is done class by class. For each class processing, if maximum processing time is reached or maximum total allocation is reached, the processing is switched to a lower class. Also each class processing, if any higher class has its maximum yield processing time or maximum yield allocated gate reached, the processing is switched to that higher class.

Method and apparatus for dynamically allocating bandwidth by hierarchical weight round robin

A high-speed Galois Counter Mode-Advanced Encryption Standard (GCM-AES) block cipher apparatus and method is provided. The apparatus can operate at a low clock frequency of 125 MHz and provide a 2 Gbps link encryption function in an Optical Line Termination (OLT) and an Optical Network Unit (ONU) of an Ethernet Passive Optical Network (EPON). 11-round block cipher of 128- bit input data is implemented using an 8-round Counter-AES (CTR-AES) block cipher module and a 3-round CTR-AES block cipher module, so that it is possible to provide a 1 Gbps link security function for an input frequency of 62.5 MHz and a 2 Gbps link security function for an input frequency of 125 MHz.

High-speed GCM-AES block cipher apparatus and method

An apparatus and method for providing a security function of frames transmitted between optical network terminals (OLTs) and optical network units (ONUs) in an Ethernet passive optical network (EPON) providing media access control (MAC) services are provided. The apparatus includes: a frame classifier distinguishing the type of a frame, and based on the logical link identifier (LLID) of the distinguished frame, determining whether or not the frame is a security link to which a security function is to be applied; a bypass unit delaying a no-security-function frame so that a processing time for converting the security-function-applied frame classified in the frame classifier into an encrypted frame is the same as a time for processing the no-security-function frame; and a parameter generation unit transmitting in relation to each of the LLIDs, a parameter set value including a security-function-application setting signal used in the encryption, decryption and authentication of the frame, a frame decryption signal, an encryption mode selection signal, and an authentication intensity adjustment signal.

MAC security entity for link security entity and transmitting and receiving method therefor

An apparatus and method for managing traffic using a VID in EPON are provided. The apparatus includes a MAC lookup table, a service classification policy table, a service control policy table, a MAC lookup unit, a first and second classification module, a VID learning unit and a first and second service control module. The apparatus classifies all packets of up/downlink transmission flow using a VID into a VID unit, through the first and second classification modules and manages traffic thereof according to the parameters thereof through the first and second service control modules. Accordingly, a large amount of traffic for numerous subscribers and services thereof, which was cannot be processed by the limitation on embodying a typical switch or router, can be processed according to the present invention.

Apparatus and method for managing traffic using VID in EPON

A method for managing a service bandwidth by a customer port and an EPON system using the same are provided. In order to manage the service bandwidth by a customer, ONU and ONT allocate a service class according to a combination of information about a customer that receives a service, and a service type and a service priority of a service provided to a customer, allocate a bandwidth according to each service class and control a uplink bandwidth or a downlink bandwidth according to a service class. Also, a system manger collects information about a service provider, a service provided from a service provider, a customer that receives a service, and information for classifying a service. After collecting, the system manager provides the collected information to the ONU and the OLT.

Method for managing service bandwidth by customer port and EPON system using the same

An authentication method for link protection between an OLT and an ONU newly connected thereto in an EPON, which is implemented in a data link layer to which cryptography is applied. First, an authentication key is distributed to both the OLT and an ONU. The OLT (or ONU) generates first and second random values, generates an authentication request frame containing the random values, and transmits it to the ONU (or OLT). The ONU generates a first hash value according to a hash function using the random values contained in the request frame, and transmits an authentication response frame containing the first hash value to the OLT. The OLT compares the first hash value with a second hash value calculated by it according to the has function using the two random values and an authentication key distributed to it, and transmits an authentication result frame to the ONU.

Authentication method for link protection in Ethernet passive optical network

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Daejeon, South Korea

Tae Whan Yoo