公开(公告)号：US20180159778A1

公开(公告)日：2018-06-07

申请号：US15735012

申请日：2016-06-08

Applicant: Samsung Electronics Co., Ltd. ,  (UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY))

Inventor： Jin-Sung LEE ,  Kyunghan LEE ,  Jung-Shin PARK ,  Han-Na LIM ,  Joo-Hyung LEE ,  Hyung-Ho LEE

IPC: H04L12/801 ,  H04L12/841 ,  H04L12/807 ,  H04L12/815

CPC classification number: H04L47/193 ,  H04L47/11 ,  H04L47/225 ,  H04L47/27 ,  H04L47/283 ,  H04L47/37

Abstract: The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate beyond a 4G communication system such as LTE. In addition, the present disclosure relates to a TCP-based transmission control method and apparatus which can reduce a delay time while improving a transmission rate in a communication system. A method for TCP-based transmission control in a communication system according to an embodiment of the present disclosure comprises the steps of: determining a maximum target transmission rate for TCP control using maximum congestion windows (CWNDs) estimated at predetermined times; determining a minimum target round trip time (RTT) for the TCP control using minimum RTTs estimated at the predetermined times; and updating at least one of a congestion window (CWND) and a receive window (RWND) in an RTT time slot, using the maximum target transmission rate and the minimum target RTT.

公开(公告)号：US20220272518A1

公开(公告)日：2022-08-25

申请号：US17741759

申请日：2022-05-11

Applicant: Ulsan National Institute of Science and Technology

Inventor： Kyunghan LEE ,  Shinik PARK

IPC: H04W8/04 ,  H04L43/0852 ,  H04L47/11 ,  H04L47/12

Abstract: A method, performed by a receiver, for controlling congestion, including receiving packets from a transmitter, determining a maximum transmission rate of the received packets; determining a minimum packet delay of the received packets; determining characteristics of a congestion window of next packets to be received from the transmitter based on the maximum transmission rate and the minimum packet delay; and transmitting information on the determined characteristics of the congestion window to the transmitter.

公开(公告)号：US20200162384A1

公开(公告)日：2020-05-21

申请号：US16666766

申请日：2019-10-29

Applicant: Ulsan National Institute of Science and Technology

Inventor： Kyunghan LEE ,  Junseon KIM

IPC: H04L12/801 ,  H04L12/851 ,  H04L12/26 ,  H04L12/863

Abstract: A network switching device includes: a communication unit; an information collection unit configured to obtain information on a network state of the network from first and second information for packets received through the communication unit; a marking reference calculation unit configured to calculate a marking reference based on the second information when it is determined that the network state has changed based on the first information; and a marking execution unit configured to perform marking indicating a congestion degree on at least a part of the packets received through the communication unit based on the calculated marking reference.

公开(公告)号：US20200186797A1

公开(公告)日：2020-06-11

申请号：US16704069

申请日：2019-12-05

Applicant: Ulsan National Institute of Science and Technology

Inventor： Kyunghan LEE ,  Wooseung NAM

IPC: H04N19/115 ,  G06K9/62

Abstract: An image processing apparatus includes a storage unit, a selection unit, and an encoding unit. The storage unit stores pre-synchronized image data. The selection unit selects as a reference image at least one of the pre-synchronized image data based on a result of comparison between the pre-synchronized image data and an original image data. The encoding unit generates a compressed image data by compressing the original image data using the reference image. The selection unit calculates similarity between the original image data and at least one of the pre-synchronized image data and selects the reference image among the synchronized image data based on the calculated similarity.

公开(公告)号：US20200162389A1

公开(公告)日：2020-05-21

申请号：US16686538

申请日：2019-11-18

Applicant: Ulsan National Institute of Science and Technology

Inventor： Kyunghan LEE ,  Shinik PARK

IPC: H04L12/801 ,  H04L12/26

Abstract: A method, performed by a receiver, for controlling congestion, including receiving packets from a transmitter, determining a maximum transmission rate of the received packets; determining a minimum packet delay of the received packets; determining characteristics of a congestion window of next packets to be received from the transmitter based on the maximum transmission rate and the minimum packet delay; and transmitting information on the determined characteristics of the congestion window to the transmitter.