Electronics and Telecommunications Research Institute

Hag Young Kim

Jung Hyun Cho

Yong Ju Lee

Myung Joon Kim

Chang Soo Kim

Seong Woon Kim

Dae Won Kim

Myeong-Hoon Oh

Soo Cheol Oh

Choon Seo Park

Ok Gee Min

Sun Wook Kim

Jong Bae Moon

Song Woo Sok

Song-woo Sok

Myeong Hoon Oh

Jin Hwan Jeong

Jin-Suk Ma

Joong Soo Lee

Jung Keun Kim

Young Ho Kim

Won Jae Lee

Young Woo Kim

Myung-Joon Kim

Chang-Soo Kim

Hyuk Je Kwon

Jin Mee Kim

Dong Jae Kang

Jung-Hyun Cho

Seung Hyub Jeon

Byung Kwon Jung

Seung Jo Bae

Won-Ok Kwon

Yuhyeon Bak

Jin Hwang Jeong

Kap Dong Kim

Yoo Hyun Park

Chanho Park

Provided are a method and an apparatus for controlling congestion based on a generation Z (Gen-Z) interface. When a first device receives, from a second device, a second packet that is a response to a first packet transmitted to the second device, and the second packet indicates that a congestion situation occurs, the first device records priority information of a packet in a predetermined field for congestion control among fields according to the Gen-Z interface. Then, the first device transmits a third packet including priority information to the second device.

Method and apparatus for controlling congestion based on Gen-Z interface

A method for generating and processing extended instructions and an apparatus using the method are provided. The method includes: transmitting, by a first device, a request packet according to an extended instruction that is generated based on a Gen-Z interface standard to a second device; and receiving, by the first device, a response packet including a result of performing the request packet from the second device. The extended instruction is generated based on a vendor-defined instruction set of the Gen-Z interface.

Method for generating and processing extended instruction and apparatus using the method

Disclosed is a virtual desktop service method. The virtual desktop service method includes configuring and measuring users and resources according to predetermined criteria, copying operating system files and data files to be provided to the users before use request, receiving request to use a virtual machine from any one of the users and performing user authentication and work approval, and providing an operating system file and a data file of the any one of the users, among the copied operating system files and data files, to the any one of the users according to the use request to transmit a virtual desktop environment. Consequently, the virtual desktop service method performs a service to provide a virtual machine to a user in real time.

Virtual desktop service apparatus and method

Provided is a virtual desktop service, and disclosed is a system for providing a server virtual machine, including: a client configured to receive allocation of a virtual machine for using a virtual desktop service; a connection broker configured to control a type of virtual machine to be allocated to be classified according to user terminal registration information of the client, any one operation server to be selected among a plurality of operation servers, and the virtual machine to be allocated; the plurality of operation servers configured to provide the client with a virtual machine under a control of the connection broker; and a shared storage configured to store data related to the client for providing the virtual machine, and provide the stored data to the operation servers, a method of providing a server virtual machine, and a server device supporting the same.

Method and system for providing server virtual machine for real-time virtual desktop service, and server device supporting the same

Disclosed herein are a method and architecture capable of efficiently providing virtual desktop service. A service architecture for virtual desktop service according to the present invention includes a connection broker configured to perform authentication, manage virtual machines, and perform a server monitoring and protocol coordination function, a resource pool configured to manage software resources that are delivered to a specific virtual machine in a streaming form on a specific time in order to provide on-demand virtual desktop service and are executed on the specific virtual machine and to provide provision information about the managed software resources in response to a request from the connection broker, and a virtual machine infrastructure configured to support hardware resources, generate virtual machines in which the software of a user terminal is executed, and provide the generated virtual machine as virtual desktops.

Apparatus and method for virtual desktop service

Disclosed is a dynamic load balancing system. The dynamic load balancing system includes a resource management master managing bare servers that do not execute services and having a hierarchical structure and a service master dynamically allocating the bare servers to a load balancing server or a service execution server or dynamically releasing the pre-allocated load balancing server or service execution server by the bare servers, in consideration of monitoring information on a state or performance of a server and service requirements to be provided.

Dynamic load balancing system and method thereof

Provided are a system and a method for distributing multimedia streaming service request based on wide area network which can efficiently support multimedia streaming service in wide area network. The system for distributing multimedia streaming service request based on wide area network includes a user terminal, a wide area server, and a local server. The user terminal requests multimedia streaming service. The wide area server for selecting a local server which is disposed nearest to the user terminal and has node availability and service availability, and providing contents requested by the user terminal to the selected local server. The local server provides the multimedia streaming service to the user terminal using the contents provided from the wide area server.

System and method for distributing multimedia streaming service request based on wide area network

Provided are a method and apparatus for obtaining a minimum cost vector for making a skyline object in a multi-dimensional space. The method includes calculating respective vector values having a query point and respective moving points to which the query point is moved as both end points in a multi-dimensional space having a plurality of coordinate axes, and selecting a vector value whose moving point is included in a skyline and has the minimum distance value from the query point as the minimum vector value from among the vector values.

Method and apparatus for obtaining minimum cost vector for making skyline object in multi-dimensional space

A method of data placement and control in a block-divided distributed disk array is provided. At first, data to store is divided into logical blocks, and each of the divided logical blocks is further divided into a plurality of data blocks. Then, a parity block is created through performing an XOR operation on the data blocks of each logical block in a unit of a strip, and the parity block is arranged at the first block of a strip unit. Then, parity blocks are arranged at a next block of a previous logical block's the last data block through a left/right shifting for uniformly arranging the parity blocks through out all disks in order to fill an empty block between the logical blocks.

Method of data placement and control in block-divided distributed parity disk array

A hierarchical system configuration method and an integrated scheduling method for offering a multimedia streaming service on a two-level double cluster system are provided. The hierarchical system configuration method includes the steps of: determining whether one server node exists; if one server node exists, determining whether one virtual server node/specific network storing and merging block exists; and if one virtual server node/specific network storing and merging block exists, setting a system configuration mode for configuring a single virtual server node based multimedia streaming server system and determining a representative network address of a current system, wherein depending on a scale and a characteristic of the multimedia streaming service, a hierarchical multimedia streaming server system is configured into a single virtual server node based system, which is a minimum-scale, a mono-level single virtual cluster based system, which is a medium-scale, and a two-level double cluster based system, which is a maximum-scale.

Hierarchical system configuration method and integrated scheduling method to provide multimedia streaming service on two-level double cluster system

A fractional caching method and an adaptive contents transmitting method using the same are provided. The fractional caching method includes the steps of setting up a divided location for dividing a certain object into two parts, receiving an evict request for acquiring a space in the inside of the cache, when the evict request is transmitted, dividing a plurality of objects stored in the cache into a prefix-Object located in the head of the object and a suffix-Object located in the tail of the object from the divided location, and removing only the suffix-Object of each object, wherein the divided location is set up at a size rate that a size of the prefix-Object is in inverse proportion to the number of the destination types.

Fractional caching method and adaptive contents transmitting method using the same

A file level striping method adds an option for indicating whether or not to support file level striping to a file creation interface in a file system, extends an inode structure to include a last disk ID field, initializes the last disk ID when the file is created in the file system, allocates a physical block based on the last disk ID when the physical block allocation is requested at the time of file I/O request in the file system, and modifies the last disk ID value to reflect the physical block allocation made by a volume manager. An apparatus using the file level striping method includes a number of disks for storing information actually, the volume manager for logically grouping a number of disks and a file system for creating files on said logical volume and performing I/O operations.

Apparatus and method for file level striping

Growing community of inventors

Daejeon, South Korea

Hag Young Kim