Nippon Telegraph and Telephone Corporation

Takuma Tsubaki

Takeshi Kuwahara

Naoki Higo

Ryota Ishibashi

Toshimitsu Tsubaki

Kojun Koshiji

Kotaro Ono

Yuki Nakahara

Kenta Kawakami

Yusuke Urata

Hiroshi Inoue

Seisho Yasukawa

Mika Ishizuka

Yuki Yano

Masanao Nakano

Takao Kurahashi

A video distribution device according to an embodiment is a video distribution device that distributes videos from a plurality of cameras installed in each of a plurality of vehicles that perform autonomous driving to a terminal, and includes a probability of collision calculating unit that calculates a probability of collision indicating a probability of the vehicles colliding with an object by a predetermined time of day, a selecting unit that selects, out of the videos of the plurality of cameras, video from a camera installed in a vehicle of which the probability of collision is highest, and a control unit for setting video quality of the video of the selected camera to be high.

Video distribution apparatus, video distribution method and program

A message relay apparatus and a message relay method that achieve high message reachability taking communication network situation into consideration are provided. A message relay apparatusinterposed between an applicationand a deviceincludes a device communication state determination functional unitthat determines communication availability with the device, a network state estimation unitthat estimates a network state based on the communication availability, and a message processing unitthat determines forwarding availability of an application message based on the network state and buffers the application message when forwarding is not available.

Message relay apparatus and method

Backup system and method that can determine a backup destination in consideration of disaster are provided. There are provided: a data acquisition unitthat acquires disaster information, network information, and node information; a replication group construction unitthat generates, based on the disaster information, and the like, replication group information including association information between a first node that stores original data and one or more second nodes that are candidates for backup destination of the original data, and saves the replication group information in a storage unit; a replication destination node calculation unitthat, when executing backup of the original data, calculates the second node as backup destination from the replication group; and a replication processing unitthat replicates and stores the original data into the storage of the second node.

Backup system, method therefor, and program

A system and method capable of efficiently using and operating resources and allowing a cluster satisfying requirements of functions/services provided to terminals to be configured of multi-access edge computing (MEC) servers are provided. A clustering systemincludes a monitoring unitconfigured to monitor a usage status of MEC servers and a network and store telemetry information in a storage unit, a cluster planning request unitconfigured to acquire non-telemetry information such as provision area information and requirement information of functions/services and deployment information of the MEC server, store the non-telemetry information in the storage unit, a cluster planning unitconfigured to set a virtual region including one or more bases satisfying a provision area and requirements on the basis of each piece of information in the storage unitand calculate a cluster plan for providing the functions/services from a plurality of MEC servers disposed at the base belonging to the virtual region, and a cluster construction unitconfigured to perform a clustering process on the basis of the cluster plan.

Clustering system and clustering method for providing services using multi- access edge computing servers

A resource allocation device includes: a course estimation unit that estimates a course of each mobile terminal based on a location of a mobile terminal acquired from a network device, and estimates a probability that each mobile terminal is located in each area at time of prediction; a determination unit that calculates, for each area, the number of mobile terminals in the area using the probability and determines whether the maximum value of an overcommit ratio for each area exceeds an upper limit; and an execution unit that executes the allocation or release of resources to an MEC server group located in each area when the maximum value of the overcommit ratio is equal to or less than the upper limit, and refrains from executing the allocation or release of the resources to the MEC server group when the maximum value of the overcommit ratio exceeds the upper limit.

Resource allocation apparatus, resource allocation method and resource allocation program

A video management device includes a storage processing unit configured to store video data received through a network in a storage unit, a calculation unit configured to classify a video data group stored in the storage unit based on combinations of imaging locations and content of video data, and to calculate a frequency of appearance of each of the combinations, and a selection unit configured to select video data to be deleted from the storage unit based on the frequency of appearance, thereby increasing a possibility that the deletion of a high-value video will be avoided.

Video management apparatus, video management method and program

Provided is a virtual world construction system that does not impair consistency between virtual worlds and places only small loads on terminals. A client applicationthat is implemented on a user terminal, a plurality of server applicationsthat are implemented on servers, and a proxythat is located on a communication path between the user terminal and the servers and relays operation information and video information are provided. The proxyincludes a motion duplication unitthat transmits operation information to the plurality of servers by duplicating the operation information, and a video integration/rendering control unitthat transmits timing information regarding rendering timing to the plurality of servers, and transmits video information received from at least one of the servers, to the user terminals. A rendering processing unit/video processing unitof each of the servers performs rendering processing and video information transmission processing based on the timing information received from the proxy

Virtual world construction system and method

A video management apparatus includes a storage processing unit configured to store, in a storage unit, video data received through a network, a determination unit configured to determine whether or not video data groups stored in the storage unit are analyzed based on a first period of time indicating a period of time until a free capacity becomes insufficient in the storage unit and a second period of time indicating a maximum analysis time required for analysis of the video data groups, a first calculation unit configured to analyze the video data groups to calculate a predetermined statistic in a case where it is determined that the video data groups are analyzed, and a deletion unit configured to delete the analyzed video data groups.

A computer executes a first determination procedure determining a first link which at least partially overlaps a disaster area representing a range reached by an influence of a predetermined disaster, among links constituting a network, a second determination procedure determining a second link which at least partially overlaps a road area representing a range of a road width of a predetermined road used to recover from the disaster, among the links constituting the network, a route search procedure searching for a plurality of routes from a start point node to an end point node constituting the network, a grouping procedure grouping the plurality of routes searched for by the route search procedure into groups depending on a first parameter value that is based on the first link included in the routes, a computing procedure computing, for each of the plurality of routes searched for by the route search procedure, a second parameter value that is based on the first link and the second link included in the routes, and a selecting procedure selecting a predetermined number of routes among one or more routes grouped into the same group on the basis of the second parameter value computed by the computing procedure for each of the groups grouped by the grouping procedure.

Growing community of inventors

Musashino, Japan

Takuma Tsubaki