公开(公告)号：US20210288723A1

公开(公告)日：2021-09-16

申请号：US16330605

申请日：2017-09-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke HISANO ,  Tatsuya SHIMADA ,  Hiroshi OU ,  Hiroko NOMURA

IPC: H04B10/69 ,  H04L27/26 ,  H04L5/00 ,  H04B10/079

Abstract: An optical transmission system includes ground stations; optical-terminating devices; a traffic-monitoring unit that detects a traffic amount of the uplink signal transmitted in a time-division multiplexing manner for each of the optical-terminating devices; and a bandwidth allocation calculation unit that estimates one optical-terminating device of the optical-terminating devices connected to one ground station of the ground stations having a cell where the moving object is positioned on the basis of the traffic amount, and calculates a first allocation amount of a bandwidth allocated to the uplink signal of the one optical-terminating device connected to the one ground station having the cell where the moving object is positioned and a second allocation amount of a bandwidth allocated to the uplink signal of another optical-terminating device of the optical-terminating devices connected to another ground station of the ground stations having a cell adjacent to the cell where the moving object is positioned.

公开(公告)号：US20190182836A1

公开(公告)日：2019-06-13

申请号：US16310050

申请日：2017-06-19

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya SHIMADA ,  Takayuki KOBAYASHI ,  Hiroshi OU ,  Daisuke HISANO

IPC: H04W72/04

Abstract: An optical transmission device includes a bandwidth allocator that periodically reads bandwidth request information indicating a bandwidth required for a termination device to transmit an uplink signal from a storage and allocates a bandwidth to the termination device on the basis of the read bandwidth request information, and a timing adjuster that adjusts a period at intervals of which the bandwidth allocator reads the bandwidth request information from the storage on the basis of the timing at which resource information used to generate the bandwidth request information is received from an upper device.

公开(公告)号：US20180309563A1

公开(公告)日：2018-10-25

申请号：US15770234

申请日：2016-10-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke HISANO ,  Tatsuya SHIMADA ,  Hiroshi OU ,  Takayuki KOBAYASHI

IPC: H04L5/14 ,  H04B10/25 ,  H04B10/2575 ,  H04B10/297 ,  H04L5/00

CPC classification number: H04L5/1469 ,  H04B7/15528 ,  H04B10/2503 ,  H04B10/25753 ,  H04B10/2971 ,  H04L5/0008 ,  H04L5/0037 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/1423 ,  H04L12/44

Abstract: A relay transmission system includes a relay unit configured to relay uplink signals and downlink signals in the first and second communication systems, a time division duplex (TDD) information estimation unit configured to estimate a transmission period of network devices in the first communication system on the basis of the uplink or downlink signal of the first communication system that is relayed by the relay unit, a surplus bandwidth determination unit configured to determine a surplus bandwidth in which an uplink signal of the first communication system is not allocated to a relay target of the relay unit during the transmission period on the basis of the number of network devices and a maximum transmission capacity of the network devices, and a bandwidth allocation unit configured to allocate the uplink signal of the second communication system to the relay target of the relay unit in the surplus bandwidth.

公开(公告)号：US20180077686A1

公开(公告)日：2018-03-15

申请号：US15562114

申请日：2016-03-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroshi OU ,  Tatsuya SHIMADA ,  Takayuki KOBAYASHI ,  Jun TERADA

IPC: H04W72/04

Abstract: Information on allocation of a bandwidth of uplink communication of each of user devices is extracted from information notified from an upper-level device on the uplink communication of the user devices. Correspondence information is created to indicate a correspondence among the upper-level device, the terminal device, the lower-level device, and the user device. A start time point of the uplink communication of the terminal device and an information amount of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the information on allocation of the bandwidth of the uplink communication of each of the user devices and the correspondence information.

公开(公告)号：US20190372698A1

公开(公告)日：2019-12-05

申请号：US16336020

申请日：2017-09-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke HISANO ,  Tatsuya SHIMADA ,  Jun TERADA ,  Hiroshi OU ,  Hiroko NOMURA

IPC: H04J14/02 ,  H04B10/2575

Abstract: An optical transmission system of an embodiment connects a plurality of wireless communication systems to each other, and includes a wavelength allocation unit that allocates different wavelengths to optical-terminating devices to which the wireless communication systems next to each other are connected, on the basis of the physical arrangement of each of the plurality of wireless communication system.

公开(公告)号：US20190007955A1

公开(公告)日：2019-01-03

申请号：US16075205

申请日：2017-01-23

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroshi OU ,  Takayuki KOBAYASHI ,  Daisuke HISANO ,  Tatsuya SHIMADA

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00

Abstract: A terminal station device is a terminal station device of a communication system in which a high-order device, the terminal station device, an end-terminal device, and a low-order device are communicably connected in this order, the high-order device notifies the low-order device of resource information indicating a resource that is usable in communication, and thereby the resource is allocated to the low-order device. The terminal station device includes: a band allocation unit that allocates a band that is permitted to be used by the end-terminal device for transmission processing to the terminal station device, based on an interval at which the terminal station device has received the resource information.

公开(公告)号：US20180063831A1

公开(公告)日：2018-03-01

申请号：US15558395

申请日：2016-03-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroshi OU ,  Tatsuya SHIMADA ,  Takayuki KOBAYASHI ,  Jun TERADA

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

CPC classification number: H04J14/0227 ,  H04J14/0228 ,  H04J14/0252 ,  H04L12/44 ,  H04L47/724 ,  H04L47/824 ,  H04W28/20 ,  H04W72/0413 ,  H04W72/12 ,  H04W88/02

Abstract: Information on allocation of a bandwidth of uplink communication of each user device is extracted from information notified by an upper-level device on the uplink communication of the user devices. Identification information of a lower-level device connected to a terminal device and identification information of the user devices are stored in correlation with each other. A bandwidth demanded for uplink communication of the terminal device is determined on the basis of the information on the allocation of the bandwidth of the uplink communication of each of the user devices and the identification information of the user devices. A start time point of the uplink communication of the terminal device and the amount of information of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the bandwidth demanded for the uplink communication of the terminal device.