Korea University Research and Business Foundation

Samsung Electronics Co., Ltd.

Hyundai Motor Company

Hyuck Yoo

Gyeongsik Yang

Song-Yean Cho

Byung-in Mun

Jin-Hyun Sin

Jin-hee Choi

See-hwan Yoo

Hyun Woo Lee

Jung Hwan Lee

Young Woo Park

Minkoo Kang

Se Won Kim

Min Hyuk Oh

Hae Young Kwon

Kyoung Woon Lee

Jin-Hee Choi

Soo-Wan Kim

Nakjung Choi

Bongyeol Yu

Cheolho Hong

Jea-Min Lim

Kyoungwoon Lee

Yeonho Yoo

Changyong Shin

Jeunghwan Lee

Jae Hyun Hwang

Byung-In Mun

See-Hwan Yoo

Disclosed is a network hypervisor apparatus for providing a software defined networking (SDN)-based virtual network, the network hypervisor apparatus including a data collector configured to collect control traffic data and network topology information for each virtual switch; a control traffic predictor configured to predict future control traffic based on the control traffic data and the network topology information; and a translator configured to translate a control message corresponding to a virtual switch based on a prediction result.

Control channel isolation with time-series control traffic prediction in programmable network virtualization

Disclosed is a computing apparatus implemented with a network hypervisor implementing software defined network (SDN)-based network virtualization. The computing apparatus include a statistics virtualization module configured to provide individual statistics to each of created virtual networks, a transmission disaggregation module configured to include a physical statistics cache that performs periodic monitoring of a plurality of physical switches and store statistics of the physical switches collected, and a physical statistics aggregation module configured to respond with statistics of the plurality of physical switches when a single monitoring request.

Network monitoring apparatus and method thereof in programmable network virtualization

An information processing device for performing performance control in a virtualized environment is disclosed. The information processing device can include an I/O thread configured to transfer signals between a virtual machine and at least one physical resource, and a performance manager unit configured to compare a target performance for the virtual machine with an actual performance of the virtual machine and manage a resource allocated to the I/O thread based on the comparison result, where the performance manager unit may obtain information regarding the actual performance of the virtual machine, determine a performance adjustment value by using the difference between the actual performance of the virtual machine and the target performance for the virtual machine, and manage the resource allocated to the I/O thread based on the performance adjustment value.

Method for controlling performance in virtualized environment and information processing device for the same

A method for receiving a streaming service is disclosed. The method for receiving a streaming service may be a method performed at a terminal for receiving a streaming service for a video content coded in a layered manner and may include the steps of: (a) sequentially requesting a transmission of at least one video data for a basic layer to be stored in the idle space of a buffer; and (b) sequentially requesting a transmission of video data for a layer of an increased level if the buffer does not have idle space, performed during the decoding of video data corresponding to a single video chunk, where step (b) may be repeated with the level of the layer increased during the decoding of video corresponding to a single video chunk.

Method for receiving adaptive streaming service

A flow rule virtualization method is disclosed. The flow rule virtualization method may include: (a) generating a virtualization type table, (b) selecting a virtualization type, which represents the degree of mapping between a virtual flow rule and a physical flow rule executed on a physical network, for a virtual flow rule generated from a tenant controller by using the virtualization type table, (c) virtualizing the virtual flow rule into the physical flow rule according to the selected virtualization type, (d) virtualizing the physical rule by using a rule map, and (e) installing the virtualized physical flow rule on the physical switch.

Flow rule virtualization apparatus and method thereof in programmable network virtualization

A high-speed packet processing system and a method of controlling the system are disclosed. The high-speed packet processing system includes: a network interface card configured to receive or transmit packets; a memory which is accessible by an operating system, and which includes at least one or more data buffers and a single dedicated head (dedicated skb) decoupled from the data buffers, where the data buffers are pre-allocated in correspondence to the packets to allow storing of the packets, and the single dedicated head is connected to the data buffers sequentially in correspondence to the packets; and a packet processing unit configured to sequentially connect the single dedicated head with the data buffers and store the packets sequentially in the data buffers corresponding to reception (Rx) descriptors based on the reception (Rx) descriptors designated in correspondence to the packets, when the packets are received.

High-speed packet processing system and control method thereof

A method for determining software errors in a virtualization-based integrated control system detects software errors for each partition (software of a vehicle controller) and recovers automatically. Thus, system reliability, which is an advantage of virtualization techniques, can be further enhanced, thereby providing an operator with stability, and software errors can be easily addressed by writing error information.

Method for determining software error in virtualization based integrated control system

A method of efficiently transmitting/receiving data using a transport layer in a mobile ad hoc network, and a network device using the method. The method includes a first step of setting, by a sending host, a flag for requesting an ACK-response into a predetermined packet of packets contained in a window for data transmission; a second step of sending, by the sending host, the packet with the flag set thereinto and other packets without any flags contained in the window to a receiving host; and a third step of, by the receiving host, receiving the packets transmitted in the second step, and sending the ACK-response to the packet with the flag set thereinto among the received packets.

Method of efficiently transmitting/receiving data using transport layer in a mobile ad hoc network, and network device using the method

A method for adjusting a transmission rate in the transmission control protocol (TCP) under a mobile ad hoc network environment, including calculating a difference value (Diff) between the current transmission rate (cur_bw) and the previous transmission rate (base_bw), setting up upper and lower thresholds by calculating the standard variation (basebw_var) of the previous transmission rate, and updating the previous transmission rate to the current transmission rate depending upon a comparison result of Diff and the size of the upper and lower thresholds.

Method for adjusting a transmission rate to obtain the optimum transmission rate in a mobile ad hoc network environment

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Seoul, South Korea

Hyuck Yoo