公开(公告)号：US20220360534A1

公开(公告)日：2022-11-10

申请号：US17624464

申请日：2019-07-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Katsuya MINAMI ,  Yuki SAKAUE ,  Hiroyuki FURUKAWA

IPC: H04L47/215 ,  H04L47/56 ,  H04L47/52 ,  H04L47/50

Abstract: An object is to provide a communication apparatus, a communication method, and a program capable of avoiding an increase in network load when input traffic continues to be large and a communication delay when input traffic is very small. A communication apparatus according to the present invention prepares three token buckets and can transfer, discard, or hold a packet in accordance with the amount of tokens in each token bucket. This enables the communication apparatus to operate so as not to exceed a set maximum bandwidth when large traffic is received for the delay guarantee shaping. Further, When the maximum bandwidth is exceeded, the communication apparatus can select whether to discard a packet to prioritize a delay guarantee or to hold a packet to prioritize no loss of packets. Furthermore, the communication apparatus can immediately transmit a packet without increasing a communication delay when input traffic is very small.

公开(公告)号：US20250142412A1

公开(公告)日：2025-05-01

申请号：US18836069

申请日：2022-02-17

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yuki SAKAUE ,  Tomohiro TANIGUCHI ,  Tatsuya FUKUI

IPC: H04W28/10

Abstract: An object of the present disclosure is to perform packet transmission control for each buffer according to communication requirements of an application.
In order to achieve the above object, a control system according to the present disclosure is a control system that controls traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit packets accumulated in buffers via the wireless network; and a controller that performs transmission control on the terminal and the access point, in which the controller controls packet transmission between the terminal and the access point for each of the buffers on the basis of amounts of the packets accumulated in the buffers of the terminal and the access point and communication requirements of an application associated with the buffers.

公开(公告)号：US20240397386A1

公开(公告)日：2024-11-28

申请号：US18691005

申请日：2021-09-16

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yuki SAKAUE ,  Tomohiro TANIGUCHI

IPC: H04W28/18 ,  H04W28/02 ,  H04W72/1273 ,  H04W72/54

Abstract: The present invention aims to provide a communication system, a control method, a controller, and a program capable of preventing deterioration in communication quality due to wireless control signals for quality control.
In a communication system according to the present invention, each of a terminal and an access point transmits an accumulated packet amount notification that is an amount of packets accumulated in a buffer having the same content a plurality of times when transmitting the accumulated packet amount notification to the controller as the control signal, and the controller determines a schedule for transmitting the packet based on the content of the accumulated packet amount notification received from at least one of the terminal and the access point, and transmits the schedule having the same content a plurality of times when the schedule is transmitted to each of the terminal and the access point as the control signal.

公开(公告)号：US20240039814A1

公开(公告)日：2024-02-01

申请号：US18020187

申请日：2020-08-14

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Katsuya MINAMI ,  Yuki SAKAUE

IPC: H04L43/08 ,  H04L43/12

CPC classification number: H04L43/08 ,  H04L43/12

Abstract: An object of the present disclosure is to continuously and easily grasp a communication quality such as RTT of application communication itself without depending on a protocol type.
A communication system of the present disclosure holds a DPI rule for each application in a DPI rule management server in advance, duplicates a packet of a designated application extracted based on a filtering rule for extracting the packet, extracts information from the packet based on a DPI rule for the application acquired from the DPI rule management server, and calculates a communication quality based on the extracted information.

公开(公告)号：US20230308395A1

公开(公告)日：2023-09-28

申请号：US18021260

申请日：2020-08-20

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Katsuya MINAMI ,  Yuki SAKAUE

IPC: H04L47/22 ,  H04L47/193 ,  H04L47/12

CPC classification number: H04L47/22 ,  H04L47/193 ,  H04L47/12

Abstract: An object of the present disclosure is to reduce traffic burstiness in a TCP without causing a window size expansion delay and a decrease in maximum throughput.
A system of the present disclosure is a communication system for transmitting a packet from a transmission terminal to a reception terminal, the communication system including a congestion control unit that performs congestion control of a packet transmitted from the transmission terminal, and a delay control shaping unit that changes a set value of delay control shaping based on a setting of a congestion window size on which the congestion control unit performs congestion.

公开(公告)号：US20230120869A1

公开(公告)日：2023-04-20

申请号：US17908738

申请日：2020-03-05

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Katsuya MINAMI ,  Yuki SAKAUE

IPC: H04L47/22 ,  H04L47/215

Abstract: An object is to provide a network management system and the like capable of being introduced into an existing network to ascertain an instantaneous traffic variation in the network. The scheme of the present invention uses a shaping function included by each edge apparatus. The shaping function controls packet transmission in a millisecond order. The network management apparatus according to the present invention adds up the amount of transmitted packets for each control period reported by each edge apparatus and estimates this as an instantaneous traffic amount in the network. In the scheme, it is only necessary to add one network management apparatus to an existing network and to cause each edge apparatus to report the amount of transmitted packet to the network management apparatus.