Nippon Telegraph and Telephone Corporation

Hiroki Iwahashi

Hidetaka Nishihara

Kaori Kurita

Kazuhiro Matsuo

Masato Nishiguchi

Takahiro Shibata

Hideaki Iwata

Takayuki Fujiwara

Koji Sugisono

Satoshi Nakatsukasa

Yuta Watanabe

Toshiyuki Kanazawa

A communication control apparatus configured to control bands for flows monitors the amount of communication of each of the flows input to the communication line in a predetermined monitoring period. When a sum of the amounts of communication of the flows acquired by the monitoring exceeds a predetermined threshold, the communication control apparatus restricts the communication bands for the top N flows in the descending order of the amount of communication input to the communication line, according to the amounts of communication of the flows. In contrast, the communication control apparatus does not restrict the communication bands for flows lower than the top N flows.

Communication control device and communication control method

An external system linkage unit () receives control information of a plurality of communication devices (to) accommodating a user using a network from an external system. A resource collection unit () acquires resource information of each of the communication devices (to) and detects a change in resource state. A device management unit () executes control of the communication device (to) including recombination of an accommodation position of the user on the basis of the control information received by the external system linkage unit () or the change of the resource state detected by the resource collection unit ().

Control device, control method, control program and control system

A management device includes: a reception unit that receives a change request for changing an allocated resource of a user who uses a communication line, from a manager of the communication line, a server managing information related to a use terminal of the communication line, or the user; and a change unit that changes the allocated resource of the user by using a predetermined change method when the reception unit receives the change request.

Control device, control method, and control program

An edge control device includes: an acquisition unit configured to acquire information about switching of an edge router accommodating a user's terminal; an instruction unit configured to instruct a dynamic host configuration protocol (DHCP) server to induce re-acquisition of an internet protocol (IP) address by the user's terminal on the basis of the information about edge router switching acquired by the acquisition unit; and a receiving unit configured to receive, from a DHCP server, a notification that induction of IP address reacquisition is completed.

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

A policy control device includes an acquisition unit configured to acquire an amount of communication of an accommodated user terminal from a relay device that notifies the amount of communication when the amount of communication exceeds a communication amount threshold value, a calculation unit configured to calculate a communication speed by using an amount of communication in a past fixed period of time including at least the amount of communication currently acquired by the acquisition unit, and calculate the communication amount threshold value based on the calculated communication speed, and a notification unit configured to notify the relay device of the communication amount threshold value calculated by the calculation unit.

Control device and control method

A resource conflict arbitration apparatus that arbitrates a conflict between resources includes: reception means configured to receive a request for resource allocation to a device among one or more devices; determination means configured to determine, when a resource requested by the resource allocation request is to be allocated to the device, whether a summed value of resources allocated to the one or more devices exceeds an upper limit value of available resources; and calculation means configured to determine, when it is determined by the determination means that the summed value exceeds the upper limit value, a status of resource allocation to each device to maximize a sum of priorities of resource allocation to the one or more devices under a constraint condition that a summed value of resources allocated to the devices does not exceed the upper limit value.

Resource contention arbitration apparatus, resource contention arbitration method and program

A collection unit () collects information about at least either of user accommodation status and resource consumption status from plural communications devices accommodating users who receive communications services. An estimation unit () estimates an amount of resource consumption of a first user for whom an accommodation device is to be determined. A judgment unit () judges whether each of the communications devices satisfies a predetermined restricting condition, based on the information collected by the collection unit () and the amount of resource consumption of the first user estimated by the estimation unit (). A determination unit () determines a communications device judged by the judgment unit () to satisfy the restricting condition among the communications devices, as the accommodation device for the first user.

Communication quality management device, method, and program for accommodating user resource consumption

A policy and charging rules function (PCRF) stores a policy rule management table in which a policy rule corresponding to a combination of contract information and a device type is registered and a hierarchical management table in which user information including contract information of a user and information on the device are managed in association with each other, acquires the device type serving as an application target of the policy rule, and a device ID assigned to the device, determines the policy rule according to the acquired device type and the contract information of the user, and instructs a deep packet inspection (DPI) to apply the determined policy rule to the device corresponding to the acquired device ID. The DPI acquires the device ID, and applies the policy rule to communication from the device corresponding to a device ID assigned to the device, and performs control.

Communication system and policy control device

A PCRF () stores a policy rule management table in which a policy rule is associated with a device type, acquires the device type serving as an application target of the policy rule, and a device ID assigned to the device, determines the policy rule corresponding to the acquired type of the device (), and instructs the DPI to apply the determined policy rule to the device corresponding to the acquired device ID. The DPI () acquires the device ID assigned to the device serving as the application target of the policy rule, applies the policy rule provided through the instruction to communication from the device () corresponding to the device ID assigned to the device to which the PCRF () instructs to apply the determined rule, and performs control.

Communication system and policy control apparatus

A communication control device specifies the top N flows in descending order of communication amounts input to a communication line as flows that are communication band limit targets, and limits a communication band of a group of flows that are the communication band limit targets to a predetermined limited band so that a sum of communication amounts of the flows input to the communication line is equal to or smaller than a predetermined line capacity. Here, the communication control device determines a value of N so that a limited band is equal to or larger than a communication amount of a flow having the largest communication amount in a group of flows that are not the communication band limit targets and is equal to or smaller than a communication amount of a flow having the smallest communication amount in the group of flows that are the communication band limit target.

Communication control apparatus, and communication control method

A policy conflict system includes a determining unit that determines, according to an instruction for application of a second polity from a second network provider to a first network provider that performs policy control based on a set of first policies, presence or absence of a third policy conflicting with the second policy, a calculating unit that, when the determining unit determines that the third policy is present, concerning each of the second policy and the third policy, calculates priority levels different from each other referring to a storing unit storing information indicating a target that should be prioritized concerning an item relating to a policy, and an imparting unit that imparts the priority levels calculated by the calculating unit to each of the second policy and the third policy. Consequently, the policy conflict resolution system enables a conflict between policies to be resolved.

Policy conflict resolving system and policy conflict resolving method

A policy conflict detection system includes a determination unit configured to determine, in response to an instruction to apply to a first network operator which performs policy control based on a set of first policies, a second policy from a second network operator, whether a third policy, which matches the second policy in terms of a priority, an application period, a control target, and a control condition and which has a control content exclusive of that of the second policy is present among the first policies, thereby enabling detection of conflict of the policies.

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Tokyo, Japan

Hiroki Iwahashi