公开(公告)号：US20230086095A1

公开(公告)日：2023-03-23

申请号：US17802304

申请日：2020-02-27

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Takuya SATO ,  Tomohiro OKADA ,  Takayuki NAKAMURA ,  Shunsuke HOMMA ,  Mitsuo AMASAKA

IPC: H04L41/0893 ,  H04L43/0852

Abstract: A management device selects an MEC device to be accessed by a plurality of client terminals forming a group from among MEC devices disposed in a plurality of places, and comprises an extracting means that extracts, from a database storing configuration information, the client terminals belonging to a specified group, network devices directly serving the client terminals, network devices between the serving network devices, and MEC devices to be treated as candidates for selection, and a selecting means that selects the MEC device to be accessed by the plurality of client terminals forming the group by using first and second amounts of latency, the first amount of latency being the amount of latency between each network device directly serving the client terminals belonging to the group and each MEC device, and the second amount of latency being the amount of latency between each network device directly serving the client terminals belonging to the group and each client terminal.

公开(公告)号：US20240146625A1

公开(公告)日：2024-05-02

申请号：US18277199

申请日：2021-02-16

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Takuya SATO ,  Takamitsu NARUMI ,  Takayuki NAKAMURA ,  Mitsuo AMASAKA

IPC: H04L41/5009 ,  H04L43/08

CPC classification number: H04L41/5009 ,  H04L43/08

Abstract: A node (100) includes a detection unit (122), an identification unit (123), and a determination unit (124). A detection unit (122) detects occurrence of a failure in a controller to which telemetry information in a slice is notified. An identification unit (123) identifies telemetry requirements of the slice when the detection unit (122) detects occurrence of the failure. A determination unit (124) determines whether to notify an alternative controller of the telemetry information in the slice in accordance with the telemetry requirements identified by the identification unit (123).

公开(公告)号：US20240129362A1

公开(公告)日：2024-04-18

申请号：US18276921

申请日：2021-02-15

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Mitsuo AMASAKA ,  Takamitsu NARUMI ,  Takayuki NAKAMURA ,  Takuya SATO

IPC: H04L67/101

CPC classification number: H04L67/101

Abstract: An orchestrator locates a server in anyone of a plurality of edge clouds on the basis of a plurality of delay differences, respectively corresponding to the plurality of the edge clouds having each delay difference and assumed if the server located in each of the edge clouds, that are each a difference between delay from the server to a first client and delay from the server to a second client, and gives a delay to at least one of the first client and the second client so that the delay from the located server to the first client and the delay from the located server to the second client become the same.

公开(公告)号：US20230119073A1

公开(公告)日：2023-04-20

申请号：US17759871

申请日：2020-02-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Mitsuo AMASAKA ,  Tomohiro OKADA ,  Shunsuke HOMMA ,  Takayuki NAKAMURA ,  Takuya SATO

IPC: H04L45/74 ,  H04L45/42 ,  H04L45/00

Abstract: A communication device includes a storage unit that stores a conversion table; a receiving unit that receives a packet addressed to a user terminal from a server, and an address conversion unit that converts a destination address of the packet into a multicast address in accordance with the conversion table, adds, to the packet, an identification ID for identifying a group to which the user terminal belongs, and transmits the packet to which the identification ID is added.

公开(公告)号：US20240305556A1

公开(公告)日：2024-09-12

申请号：US18277026

申请日：2021-02-16

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takayuki NAKAMURA ,  Mitsuo AMASAKA ,  Takuya SATO ,  Hideo TSUCHIYA ,  Takamitsu NARUMI

IPC: H04L45/125 ,  H04L45/00

CPC classification number: H04L45/125 ,  H04L45/22

Abstract: A detour route calculation unit of an NW controller specifies a slice capable of changing a route among slices stored in an inter-SLG path via a link to be detoured based on a network requirement set for each slice. Next, the detour route calculation unit calculates a route for detouring the link to be detour, from among routes between SLGs storing the specified slice. Then, the detour route calculation unit selects a slice having the largest bandwidth usage from among the specified slices, the bandwidth usage of the slice being equal to or less than the surplus bandwidth of the detour route of the slice. Thereafter, the detour route calculation unit newly sets an inter-SLG path via the detour route, and changes the setting of the SLG so that the selected slice passes through the newly set path.

公开(公告)号：US20230327993A1

公开(公告)日：2023-10-12

申请号：US18023056

申请日：2020-08-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Mitsuo AMASAKA ,  Hideo TSUCHIYA ,  Takayuki NAKAMURA ,  Takuya SATO

IPC: H04L47/122 ,  H04L43/16

CPC classification number: H04L47/122 ,  H04L43/16

Abstract: A control device includes a control unit configured to transmit a request received from an information processing device performing setting on a relay device relaying a packet in software defined networking (SDN) to the relay device. The control unit sequentially transmits each request from the information processing device to the relay device and sequentially transmits each response from the relay device in response to each of the requests to the information processing device when a processing load of the control device is equal to or less than a threshold, and transmits a request in which a plurality of requests from the information processing device are collected to the relay device and transmits a response in which responses to the plurality of requests are collected to the information processing device when the processing load of the control device is not equal to or less than the threshold.

公开(公告)号：US20230319698A1

公开(公告)日：2023-10-05

申请号：US18042879

申请日：2020-08-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takayuki NAKAMURA ,  Shunsuke HOMMA ,  Mitsuo AMASAKA ,  Takuya SATO

IPC: H04W48/18 ,  H04W40/12

CPC classification number: H04W48/18 ,  H04W40/12 ,  H04W88/16

Abstract: A gateway device includes a memory and a processor configured to execute: referring to a transfer table for determining a transfer destination tunnel of a packet upon reception of the packet provided with a header including a slice requirement indicating a packet transfer requirement and a transmission destination domain ID indicating a domain of a transmission destination of the packet, to specify a tunnel corresponding to the slice requirement and the transmission destination domain ID; and outputting the packet to the tunnel specified by the referring.