公开(公告)号：US20220294742A1

公开(公告)日：2022-09-15

申请号：US17634197

申请日：2019-08-19

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Naotaka SHIBATA ,  Hiroyuki UZAWA ,  Jun TERADA

IPC: H04L47/283 ,  H04L47/24 ,  H04L47/62 ,  H04L49/20 ,  H04L45/24

Abstract: A path control device controls a plurality of paths for transmitting signals through a network including a plurality of signal transfer devices that transfer signals while switching a first transmission period during which high-priority traffic can be transmitted and a second transmission period during which low-priority traffic can be transmitted. The path control device includes: a calculation unit that calculates a plurality of paths through which signals are transferred, based on network configuration information indicating a configuration of the network; an estimation unit that estimates paths for low-priority traffic so as to increase the number of low-priority traffic flows to be transferred during a predetermined period through the plurality of paths calculated by the calculation unit, in a case in which the plurality of signal transfer devices detect an end of high priority traffic in the first transmission period, in accordance with statistical values in the second transmission period based on a transmission schedule made to change the first transmission period after the end of high-priority traffic to the second transmission period; and a determination unit that determines, for each of the plurality of signal transfer devices, output destination setting information such that the paths estimated by the estimation unit are set to an output destination of low-priority traffic.

公开(公告)号：US20220263762A1

公开(公告)日：2022-08-18

申请号：US17595918

申请日：2019-06-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Naotaka SHIBATA ,  Hiroyuki UZAWA ,  Noriyuki OTA ,  Jun TERADA

IPC: H04L47/22 ,  H04L49/90 ,  H04L43/0888

Abstract: A buffer unit including a plurality of buffers, a sorting unit configured to sort an input signal to any of the plurality of buffers based on header information, a rate calculation unit configured to calculate a rate at which the input signal is read from each of the plurality of buffers based on burst information of the input signal, an adjustment unit configured to adjust a rate at which the input signal is read from each of the plurality of buffers based on the rate calculated by the rate calculation unit, and a transfer unit configured to transfer the signal read from each of the plurality of buffers are provided.

公开(公告)号：US20220200911A1

公开(公告)日：2022-06-23

申请号：US17595063

申请日：2020-04-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroyuki UZAWA ,  Naotaka SHIBATA ,  Yoichi FUKADA ,  Jun TERADA

IPC: H04L47/22 ,  H04L49/351 ,  H04L47/32

Abstract: A communication control system includes a plurality of layer 2 switches (SWs); and a communication control device that controls communication of the SWs. Each SW includes one or more queues that each have a variable queue length for accumulating input frames, and a transmission unit that has a shaping function of transmitting the frames accumulated in the queues to a desired destination at a desired rate. The communication control device includes a correction processing unit that acquires an amount of discarded data generated in each queue of the SW, and multiplies the acquired amount of discarded data by a correction coefficient weighted by the cumulative number of times of discarding occurrences for which the amount of discarded data is not 0 to obtain a corrected amount of discarded data; and an adjustment processing unit that determines adjustment values for the queue length of each queue and shaping rate of the SW based on the corrected amount of discarded data, and notifies each SW of the adjustment values.

公开(公告)号：US20210243127A1

公开(公告)日：2021-08-05

申请号：US17233996

申请日：2021-04-19

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke HISANO ,  Hiroyuki UZAWA ,  Tatsuya SHIMADA

IPC: H04L12/815 ,  H04L5/00

Abstract: A bandwidth allocation apparatus includes: a traffic starting position detection unit that detects a start timing of burst traffic on the basis of the traffic information; a traffic information extraction unit that extracts information on a traffic amount of each of a plurality of traffic allocation periods from the traffic information extracted for each lower-level apparatus; a traffic amount estimation unit that calculates an average value of the traffic amount in the traffic allocation periods on the basis of the information on the traffic amount that the traffic information extraction unit has extracted for each lower-level apparatus; and a bandwidth allocation unit that allocates a first bandwidth which is an allocation bandwidth based on the average value calculated by the traffic amount estimation unit to the terminating apparatus from the start timing detected by the traffic starting position detection unit.

公开(公告)号：US20190394135A1

公开(公告)日：2019-12-26

申请号：US16483763

申请日：2018-01-31

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke HISANO ,  Hiroyuki UZAWA ,  Tatsuya SHIMADA

IPC: H04L12/815 ,  H04L5/00

Abstract: A bandwidth allocation apparatus includes: a traffic starting position detection unit that detects a start timing of burst traffic on the basis of the traffic information; a traffic information extraction unit that extracts information on a traffic amount of each of a plurality of traffic allocation periods from the traffic information extracted for each lower-level apparatus; a traffic amount estimation unit that calculates an average value of the traffic amount in the traffic allocation periods on the basis of the information on the traffic amount that the traffic information extraction unit has extracted for each lower-level apparatus; and a bandwidth allocation unit that allocates a first bandwidth which is an allocation bandwidth based on the average value calculated by the traffic amount estimation unit to the terminating apparatus from the start timing detected by the traffic starting position detection unit.

公开(公告)号：US20180192328A1

公开(公告)日：2018-07-05

申请号：US15739677

申请日：2016-06-22

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroyuki UZAWA ,  Yuki ARIKAWA ,  Kenji KAWAI ,  Satoshi SHIGEMATSU

IPC: H04W28/14 ,  H04W72/04 ,  H04J14/02

Abstract: A CU (Central Unit) executes scheduling for allocating radio resources of RRUs (Remote Radio Units) to radio transmission of downlink data while broadcasting, to DMs (Data Managers) via MFH, downlink data from MBH. Each DM selects, based on an allocation result obtained by scheduling, the downlink data of an RRU (Remote Radio Unit) corresponding to the self DM from the accumulated downlink data from the CU, and transfers the selected downlink data to the corresponding RRU while discarding the downlink data of other RRUs. Based on the allocation result, each RRU performs radio transmission of the downlink data from the DM to a corresponding UE (User Equipment) using the designated radio resource. This makes it possible to efficiently transfer the downlink data from the CU to each RRU via the MFH constructed by a TDM system represented by TDM-PON.

公开(公告)号：US20240273874A1

公开(公告)日：2024-08-15

申请号：US18567353

申请日：2021-12-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ken NAKAMURA ,  Yuya OMORI ,  Daisuke KOBAYASHI ,  Shuhei YOSHIDA ,  Saki HATTA ,  Hiroyuki UZAWA ,  Koyo NITTA

IPC: G06V10/77 ,  G06V10/82

CPC classification number: G06V10/7715 ,  G06V10/82

Abstract: When an output feature map to be an output of convolution processing is output, the output feature map is output to a storage unit for each of divided small regions. When each small region is output to the storage unit, in a case where a feature included in the small region is the same as a predetermined feature or a feature of a small region output in the past, the predetermined feature or the feature of a small region output in the past is compressed and output to the storage unit.

公开(公告)号：US20230409914A1

公开(公告)日：2023-12-21

申请号：US18037645

申请日：2020-11-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shuhei YOSHIDA ,  Hiroyuki UZAWA ,  Saki HATTA ,  Yuya OMORI ,  Daisuke KOBAYASHI ,  Ken NAKAMURA ,  Koyo NITTA

IPC: G06N3/082 ,  G06N3/0464

CPC classification number: G06N3/082 ,  G06N3/0464 ,  G06V10/82

Abstract: The integration unit 26, using configuration information of the convolutional neural network model and each filter used in each convolutional layer of the convolutional neural network model as inputs, deletes one or more pieces of activation function processing performed between the plurality of convolutional layers and integrates a plurality of filters used in the plurality of convolutional layers.

公开(公告)号：US20220417914A1

公开(公告)日：2022-12-29

申请号：US17269211

申请日：2019-08-16

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroyuki UZAWA ,  Hirotaka UJIKAWA ,  Hirotaka NAKAMURA

IPC: H04W72/04 ,  H04W28/20 ,  H04W72/12

Abstract: A bandwidth allocation apparatus includes an acquisition unit acquiring scheduling information related to transmission of uplink data from a first subscriber line termination apparatus corresponding to a subscriber line termination apparatus needing to transfer uplink data with low latency, a requested amount reception unit receiving, from second subscriber line termination apparatus corresponding to a subscriber line termination apparatus not needing to transfer uplink data with low latency, information representing a requested amount related to transmission of uplink data from the second subscriber line termination apparatus, in a requested amount reception cycle corresponding to a cycle equal to or longer than a predetermined maximum round-trip time, and an allocation unit allocating, in an allocation amount determination cycle shorter than the requested amount reception cycle, a bandwidth to the uplink data from the first subscriber line termination apparatus on a basis of the scheduling information, and allocating, in the allocation amount determination cycle, a bandwidth to the uplink data from the second subscriber line termination apparatus on a basis of the information representing the requested amount.

公开(公告)号：US20220263594A1

公开(公告)日：2022-08-18

申请号：US17725148

申请日：2022-04-20

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroyuki UZAWA ,  Tatsuya SHIMADA ,  Daisuke HISANO ,  Hiroko NOMURA

IPC: H04J3/16 ,  H04W72/04 ,  H04W72/12

Abstract: A bandwidth allocation device is included in a communication system having a terminal station device and a terminal device and relaying upstream data, which is received from a communication terminal by a lower device connected to the terminal device, to an upper device connected to the terminal station device. The bandwidth allocation device includes a transmission-permitted period start position determining unit configured to estimate a start position of an arrival period in which the upstream data arrives at the terminal device from the lower device; a transmission-permitted period length determining unit configured to estimate a length of the arrival period based on an amount of upstream data to be transmitted from the lower device to the terminal device; and a bandwidth allocation unit configured to allocate a bandwidth to the terminal device based on the estimated start position and the estimated length of the arrival period.