Nippon Telegraph and Telephone Corporation

Shunsuke Homma

Hideo Tsuchiya

Takuya Sato

Takayuki Nakamura

Akihiro Kimura

Hidetaka Nishihara

Katsuma Miyamoto

Akihiro Okada

Hideaki Iwata

Tomohiro Okada

Shinya Kawano

Toru Okugawa

Aki Fukuoka

Mitsuo Amasaka

Shinya Arita

A slice gateway connects one or more subslices in a network in which an E2E slice is made up of multiple subslices. The slice gateway receives an inspection packet, determines an output destination subslice of the inspection packet based on a distribution table, embeds an ID of the output destination subslice in a payload of the inspection packet, and outputs the packet that includes the embedded ID to the output destination subslice; and notifies a quality tabulation device of information regarding the inspection packet.

Slice gateway, quality calculation apparatus, inspection packet processing method and program

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.

Communication apparatus, receiving side communication apparatus, communication method and program

A management device 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.

System and method for selecting computing device for multi-user access

A communication control apparatus authenticates a user based on an authentication request transmitted from virtual Customer Premise Equipment (CPE) in response to a request of the user who accesses the virtual network. The communication control apparatus refers to information, held by an operation management system of a service operator, about the user of the virtual network. The communication control apparatus refers to information, collected by a collector, about a network slice constructed in the virtual network. The communication control apparatus selects a network slice through which data flow of the user. The communication control apparatus notifies the virtual CPE of the selected network slice.

Communication control device, communication control system, communication control method, and communication control program

A storage unit () stores a terminal identifier for identifying a terminal, locator information indicating a transfer node to which a terminal is connected, a candidate terminal identifier for identifying a candidate terminal that is a communication destination candidate of the terminal, and candidate locator information indicating a transfer node to which the candidate terminal is connected in association with each other. An acquisition unit () acquires, from a transfer node to which a terminal is newly connected, mapping information in which a locator information indicating the transfer node and a terminal identifier of the terminal are associated and stores the mapping information in the storage unit (). A notification unit () notifies the transfer node to which the terminal is newly connected of the candidate terminal identifier and the candidate locator information stored in association with the terminal identifier that is acquired in the storage unit ().

Notification device and notification method

An optical line terminal (OLT) detects content distribution conditions in terminals, and performs control for performing switching to distribution to each terminal using an individual virtual local area network (VLAN) or distribution to a plurality of terminals by broadcasting using a broadcasting VLAN, in accordance with the detected content distribution conditions. The OLT detects that the number of viewers of a predetermined channel exceeds a predetermined threshold value or is less than the predetermined threshold value, as the content distribution conditions. Further, the OLT performs switching to distribution using a broadcasting VLAN in a case where it is detected that the number of viewers of the predetermined channel exceeds the predetermined threshold value, and performs switching to distribution using an individual VLAN in a case where it is detected that the number of viewers of the predetermined channel is less than the predetermined threshold value.

Communication device and switching method

An MDF () receives MLDv2 received by vCPE () that is connected to CPE () via a tunnel. When the MLDv2 is received, the MDF () determines an edge router () that accommodates the CPE () being a transmission source of the MLDv2. Then, the MDF () instructs the determined edge router () to perform copy distribution of contents to the CPE () being the transmission source of the MLDv2.

A function management device that manages, in a communication system including a plurality of pieces of customer premises communication equipment and a server capable of providing a function to the plurality of pieces of customer premises communication equipment, the function provided by the server, and includes a resource management unit configured to collect resource information from the plurality of pieces of customer premises communication equipment, a network management unit configured to collect, from the server, network band information of each of the functions, the network band being between the plurality of pieces of customer premises communication equipment and the server, and a function processing unit configured to activate a virtual machine on one of the plurality of pieces of customer premises communication equipment on the basis of the resource information and the network band information to cause a first function selected on the basis of a band occupancy ratio from among the functions provided by the server to be executed.

Function management apparatus, function management method and communication system

A communication apparatus connected to a virtual apparatus having an address dispensing function via an access network is provided, wherein the communication apparatus includes a communication confirmation unit configured to perform a communication confirmation between the virtual apparatus and the communication apparatus; and an address dispensing unit configured to dispense an address to a user terminal under control of the communication apparatus when communication between the virtual apparatus and the communication apparatus is not able to be confirmed by the communication confirmation unit, and the address dispensing unit causes the user terminal to forcibly release the address when the communication between the virtual apparatus and the communication apparatus is able to be confirmed by the communication confirmation unit.

Communication apparatus, communication method and program

A load distribution system has: determination means for determining, upon an input port receiving a packet, a flow attribute indicating whether a flow configured by the packet is a flow that tends to include many long packets or a flow that tends to include many short packets; and output means for outputting the packet to a packet transfer device in a load state indicating that a load applied by the flow of the flow attribute is low, of a plurality of packet transfer devices, in accordance with the flow attribute determined by the determination means.

Growing community of inventors

Tokyo, Japan

Shunsuke Homma