JP2007325021A - Method and device for controlling communication, and user terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the efficiency of using network resources. <P>SOLUTION: A method is used for controlling the communication between user terminals set on a communication network. By using the method, a computer executes: a procedure for acquiring control conditions for indicating a prescribed range capable of creating a plurality of patterns for communication start time, communication completion time, and a communication band related to communication to be controlled from the user terminal; a procedure for acquiring communication control information meeting extraction conditions created based on network topology related to the communication network, the network resources, and the control conditions as the information of the communication network; a procedure for creating not less than one service plan, where the communication start time, the communication completion time, and the communication band meeting control conditions are clarified, based on the acquired information of the communication network; and a procedure for controlling communication, based on the service plan selected by the user terminal 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a communication control method, a communication control device, and a user terminal.

  Conventionally, when user programs communicate with each other over a network capable of quality assurance, a dedicated line is used or RSVP-TE (Non-Patent Document 2) on a GMPLS (Non-Patent Document 2) network. Using 3), a quality assurance path that does not set an expiration date is set in advance, and communication is performed using the path.

In addition, a method for dynamically setting and releasing a path capable of quality assurance, such as UCLP (Non-Patent Document 4), has been studied. However, a request is made by clarifying the time and bandwidth used by the user or user program. Need to be done and the network is controlled according to the request.
IETF, “Generalized Multi-Protocol Label Switching (GMPLS) Architecture”, [online], [searched on May 23, 2006], Internet <URL: http://www.ietf.org/rfc/rfc3945.txt> IETF, “Multiprotocol Label Switching Architecture”, [online], [searched on May 23, 2006], Internet <URL: http://www.ietf.org/rfc/rfc3031.txt> IETF, “Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions”, [online], [Search May 26, 2006], Internet <URL: http: // www.ietf.org/rfc/rfc3473.txt> RSVP-TE UCLP, “User Controlled Light Paths”, [online], [searched May 31, 2006], Internet <URL: http://www.uclp.ca/>

  However, according to the conventional technology, the use efficiency of network resources is reduced in cases where the communication time is unknown, the communication speed is unknown, or the control is executed manually in advance. In the case where dynamic control is executed, a problem that a control request cannot be accepted has occurred.

  The case where the communication time is unknown is a case where the time used by the user or the user program cannot be clarified as in an IP phone.

  In cases where the communication speed is unknown, for example, when copying large data to a remote location, quality assurance is required to transfer the data, and there is an acceptable communication speed and communication time. This is a case where there is no requirement.

  For cases where the communication time is unknown, the communication speed is unknown, or the control is executed manually in advance, the path should be set in advance by increasing the use time or making the bandwidth larger than expected. By setting, it was possible to suppress the occurrence of insufficient path setting time and insufficient setting bandwidth. However, as a side effect, the network resources are wasted, the network accommodation efficiency is reduced, and the user pays more than necessary for communication.

  The case where dynamic control is executed is that the network side is congested because the user side specifies the communication time and bandwidth, and the control request cannot be accepted when the control request is excessively concentrated beyond the network performance. Is also the case. It should be noted that control requests may or may not be concentrated over the network performance during times of network congestion.

  Therefore, the present invention has been made in view of the above problems, and mainly aims to reduce communication costs and improve the permission probability of control requests by improving the utilization efficiency of network resources. With a purpose.

  In order to solve the above-described problem, the present invention provides a communication control method for controlling communication between user terminals set on a communication network, wherein a computer starts a communication start time related to the communication subject to the communication control. A procedure for acquiring from the user terminal a control condition indicating a predetermined range in which a plurality of patterns can be created with respect to a communication end time and a communication band, a network topology related to the communication network, a network resource, and A procedure for acquiring communication control information satisfying an extraction condition created based on the control condition as information of the communication network, and a communication start time satisfying the control condition based on the acquired information of the communication network, A procedure for creating one or more service plans with clear communication end times and communication bands, and the service selected by the user terminal. Based on the scan plan, and executes a a procedure for the communication control.

  Thereby, even when the bandwidth and time required by the user and the user program cannot be clearly determined, communication control between user terminals can be determined by using information on the communication network. Therefore, the utilization efficiency of network resources is improved. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

The present invention is characterized in that the procedure for creating one or more service plans creates the service plan by sequentially executing the following procedures (1) to (4).
(1) Remaining a necessary band during a communication time that requires the communication control using the network topology, the network resource, and the communication control information at the start time of communication between the user terminals (2) A delay of each link is set in the calculation network topology as a metric for each link in (1) using the network resource. 3) Using the Dijkstra algorithm, obtain the route with the smallest total metric from the network topology for calculation set in (2). (4) The route obtained in (3) is one service plan.

  Accordingly, it becomes possible to create a service plan that efficiently uses the network in accordance with a request from the user program, and the use efficiency of the network resources can be improved. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

  According to the present invention, the procedure for creating one or more service plans is based on a history of what service is adopted for each user stored in the communication history information DB. It is characterized by creating.

  This makes it possible to propose a service suitable for each user or user program, and can further improve the use efficiency of network resources. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

  According to the present invention, a procedure for creating one or more of the above service plans includes a user program name, a user program identifier, a protocol name, a protocol identifier, a port number, and communication stored for each user program in the communication history information DB. Creating one or more of the above service plans based on information necessary to determine an appropriate length of communication time and bandwidth from at least one of the quality levels of image, video and audio to be performed It is characterized by.

  This makes it possible to propose a service suitable for each user program, and can further improve the utilization efficiency of network resources. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

  The present invention is characterized in that the communication control is performed immediately after accumulating the service plan in a storage unit, based on the service plan that starts communication immediately.

  As a result, even for a service plan that requires immediate network control, it is possible to immediately perform network control, and the utilization efficiency of network resources can be further increased. Therefore, the communication cost can be further reduced, and the permission probability of the control request can be improved.

  The present invention is characterized in that the communication control procedure controls a path on the communication network by MPLS or GMPLS for a communication apparatus on the communication network.

  As a result, a network device that is already compatible with GMPLS or MPLS can be used as a part of the communication system. Therefore, it is possible for the developer to reduce the cost and the period for developing a new communication device, and for the system builder, it is possible to utilize the existing equipment, so that the communication cost can be further reduced.

  The present invention is characterized in that the procedure for performing the communication control sets packet transfer priority control by Diffserv for a communication device on the communication network.

  As a result, a network device that is already compatible with Diffserv can be used as a part of the communication system. Therefore, it is possible for the developer to reduce the cost and the period for developing a new communication device, and for the system builder, it is possible to utilize the existing equipment, so that the communication cost can be further reduced.

  The present invention is a communication control apparatus that performs communication control of communication between user terminals set on a communication network, and includes a plurality of communication start times, communication end times, and communication bands related to the communication subject to the communication control. A control request accepting unit that obtains a control condition indicating a predetermined range in which a pattern can be created from the user terminal, a network topology related to the communication network, a network resource, and the control condition A control request processing unit that acquires communication control information that satisfies the extraction condition as information of the communication network, and a communication start time that satisfies the control condition based on the acquired information of the communication network, a communication end time, and A request interpreter that creates one or more service plans with a clear communication band, and the service plan selected by the user terminal And having a said communication control instruction unit that performs the communication control.

  Thereby, even when the bandwidth and time required by the user and the user program cannot be clearly determined, communication control between user terminals can be determined by using information on the communication network. Therefore, the utilization efficiency of network resources is improved. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

The present invention is characterized in that the request interpretation unit creates the service plan by sequentially executing the following procedures (1) to (4).
(1) Remaining a necessary band during a communication time that requires the communication control using the network topology, the network resource, and the communication control information at the start time of communication between the user terminals (2) A delay of each link is set in the calculation network topology as a metric for each link in (1) using the network resource. 3) Using the Dijkstra algorithm, obtain the route with the smallest total metric from the network topology for calculation set in (2). (4) The route obtained in (3) is one service plan.

  Accordingly, it becomes possible to create a service plan that efficiently uses the network in accordance with a request from the user program, and the use efficiency of the network resources can be improved. Therefore, the communication cost can be reduced and the permission probability of the control request can be improved.

  The present invention is characterized in that the request interpreter creates one or more of the service plans based on a history of what service is adopted stored for each user in the communication history information DB. To do.

  Thereby, the user terminal can perform communication controlled communication according to the service plan in accordance with the request presented by itself.

  In the present invention, the request interpreter stores a user program name, a user program identifier, a protocol name, a protocol identifier, a port number, and an image, a video to be communicated, and the like stored for each user program in the communication history information DB. One or more of the service plans are created based on information necessary for determining an appropriate communication time length and bandwidth from at least one of the voice quality levels.

  Thereby, the user terminal can perform communication controlled communication according to the service plan in accordance with the request presented by itself.

  According to the present invention, the communication control side communicates with the communication start time, the communication end time, and the control condition indicating a predetermined range in which a plurality of patterns can be created for the communication band presented by the user terminal side. A service plan with a clear start time, communication end time, and communication band is created. That is, the requests on the user terminal side and the communication control side are reflected in communication control in a well-balanced manner. Therefore, it is expected that the utilization efficiency of the network resource is improved, the communication cost can be reduced, and the control request acceptance probability can be improved.

  Furthermore, the present invention, when securing resources such as bandwidth in the network at the time of a control request, receives parameters such as the amount of transfer data and the required level of communication quality from the user program on the client side, and executes appropriate communication resources ( By providing means for presenting (service) to the client side on the network side, it is possible to set a communication path that meets the conditions without the client sending a communication control request instructing specific quality parameters.

  Hereinafter, an embodiment of a communication system to which the present invention is applied will be described in detail with reference to the drawings.

  FIG. 1 is a configuration diagram showing the entire communication system. The communication system presents a control request (for example, an application range or a service level) indicating a predetermined range in which a plurality of patterns can be created regarding the communication start time, communication end time, and communication band from the user program. A path provision is executed for the request.

  The backbone network 1 (communication network in the claims) is an IP (Internet Protocol) network configured by a broadband link. The backbone network 1 includes a backbone network device such as an optical cross connect (OXC) (not shown) and a node 3, for example. The state of the entire backbone network is managed by, for example, OSPF-TE (Open Shortest Path First-Traffic Engineering).

  Note that the backbone network 1 may be configured as a network capable of both best effort communication on a shared network and individual quality assurance communication. Note that the network to be controlled may be not only the backbone network 1 but also a virtual network composed of a part of the resources of the backbone network 1.

  The peripheral network 2 (2a, 2b) is a network for directly connecting the user terminals 4, and is connected to the backbone network 1 by a node 3 serving as an edge router. The peripheral network 2 is configured using a LAN (Local Area Network) such as Ethernet (registered trademark), for example, and each communication device of the peripheral network 2 is connected to a LAN network cable (not shown) and a network hub (not shown). It is possible to perform IP communication with each other via a relay device such as a router (not shown) or a router (not shown).

  The node 3 (3a, 3b) is a communication device of the backbone network 1 by IP, but may be a communication device by a general network instead of IP. The node 3 can perform transfer order control by Diffserv and quality control using a communication control technique such as MPLS or GMPLS.

  In the user terminal 4 (4a, 4b), the user program processing unit 10 executes one or more user programs.

  The user program processing unit 10 communicates user program data with each other by executing the user program.

  The communication control device 5 controls communication between the user program processing units 10 by controlling Diffserv transfer order between nodes 3 and setting an MPLS or GMPLS path. The communication control device 5 and the node 3 are configured as a computer including at least a memory serving as a storage unit used when performing arithmetic processing and an arithmetic processing device that performs the arithmetic processing. The memory is constituted by a RAM (Random Access Memory) or the like. Arithmetic processing is realized by an arithmetic processing unit configured by a CPU (Central Processing Unit) executing a program on a memory.

  The communication control device 5 includes a control request accepting unit 20, a control request processing unit 30, a network topology management unit 41, a network resource management unit 42, a control information management unit 50, and a communication control instruction unit 60. Details of the configuration and details of signals between the configurations will be made clear in the explanation of the flowchart described later.

  The network topology management unit 41 manages the network topology (network shape) in the storage unit for the backbone network 1. In addition to the backbone network 1, the network topology of the peripheral network 2 may be managed, or only the network topology of the peripheral network 2 may be used. However, when the backbone network 1 and the peripheral network 2 are targets of communication control, the network topology management unit 41 manages the network topology of the backbone network 1 and the peripheral network 2 in the storage unit. When only the peripheral network 2 is to be subject to communication control, at least the network topology of the peripheral network 2 is managed in the storage means.

  The network resource management unit 42 manages network resources such as bandwidth, distance, or propagation delay for links between nodes in the storage unit for the backbone network 1. In addition to the backbone network 1, the network resources of the peripheral network 2 may be managed, or only the network resources of the peripheral network 2 may be used. However, when the backbone network 1 and the peripheral network 2 are subject to communication control, the network resource management unit 42 manages the network resources of the backbone network 1 and the peripheral network 2 in the storage means. When only the peripheral network 2 is subject to communication control, at least network resources of the peripheral network 2 are managed in the storage unit.

  The network topology and network resources related to the backbone network 1 may be managed in a distributed manner by a router that is the node 3, or may be managed in a centralized or distributed manner by a server that is not the node 3. Moreover, both may be used together, such as a router managing a network topology and a server managing network resources. For example, when OSPF-TE is used, both network topology and network resources can be managed.

  Furthermore, the network topology and network resources related to the peripheral network 2 are managed in a distributed manner by the nodes 3 and / or routers installed in the peripheral network 2, or are centralized or distributed by other servers. It may be managed. Moreover, both may be used together, such as a router managing a network topology and a server managing network resources. For example, when OSPF-TE is used, both network topology and network resources can be managed.

  Thus, the network topology management unit 41 and the network resource management unit 42 may be realized by the same technology.

  FIG. 2 is a configuration diagram showing the control request accepting unit 20. Details of the configuration and details of signals between the configurations will be made clear in the explanation of the flowchart described later.

  FIG. 3 is a configuration diagram illustrating the control request processing unit 30. Details of the configuration and details of signals between the configurations will be made clear in the explanation of the flowchart described later. The control request processing unit 30 includes a request interpretation unit 31 and a communication history information DB 32.

  FIG. 4 is a configuration diagram showing the control information management unit 50. Details of the configuration and details of signals between the configurations will be made clear in the explanation of the flowchart described later. The control information management unit 50 includes a control information extraction unit 51, a control information storage unit 52, a control information DB 53, and a control information detection unit 54.

  FIG. 5 is a flowchart showing processing of the communication system. Hereinafter, the processing of the communication system will be described with reference to FIGS.

  The user program processing unit 10a gives the control request receiving unit 20 a control condition indicating a predetermined range in which a plurality of patterns can be created for the control request, the communication start time, the communication end time, and the communication band. (S11).

  The control condition is a communication execution request and a communication source IP address / communication destination IP address / user program name / user program identifier / protocol name / protocol identifier / port number / bandwidth / transfer from a user program executed on the client. The amount of data required, its direction, acceptable communication delay, whether communication is greatly affected by communication delay, the quality level of the image, video and audio to be communicated, the communication interface and the read / write speed of the disk, The communication destination computer derived from the maximum communication speed of the communication source computer derived from the memory read / write speed and the computational capacity of the CPU, the communication interface, the disk read / write speed, the memory read / write speed, the computational capacity of the CPU, etc. Communication speed / minimum required communication speed / communication • Time when communication must be started • Time when communication can be terminated • Time when communication must be terminated • Whether bandwidth can be changed during communication • During communication It is defined by one or a plurality of parameters, such as whether or not a route can be changed, a required recovery method at the time of failure, required path reliability and availability, maximum allowable no-communication time, and allowable maximum cost.

  The control request receiving unit 20 notifies the control request processing unit 30 (the request interpretation unit 31 in FIG. 3) of the information received in S11 (S12).

  The control request processor 30 (request interpreter 31 in FIG. 3) requests the network topology from the network topology manager 41 (S21).

  The network topology management unit 41 notifies the control request processing unit 30 (request interpretation unit 31 in FIG. 3) of the network topology as a response to the request in S21 (S22). Note that the process of S22 may be executed at a predetermined opportunity without performing the process of S21. The predetermined opportunity is, for example, periodically or when the network topology or the network resource is changed.

  The control request processing unit 30 (request interpreting unit 31 in FIG. 3) requests a network resource from the network resource management unit 42 (S23).

  The network resource management unit 42 notifies the control request processing unit 30 (the request interpretation unit 31 in FIG. 3) of the network resource as a response to the request in S23 (S24). Note that the process of S24 may be executed by a predetermined trigger without performing the process of S23. The predetermined opportunity is, for example, periodically or when the network topology or the network resource is changed.

The following three methods (1) to (3) will be exemplified as specific methods for realizing S21 to S24.
(1) Network topology or network resources may be managed in a distributed manner by the nodes 3 using a routing protocol or the like. At that time, the request interpreter 31 is notified of the network topology or the network resource included in the routing protocol message received by the communication control device 5. The trigger for notification is periodically when there is a request from the control request processing unit 30, or when there is a change in the network topology or network resources.
(2) The communication control device 5 notifies the node 3 (router or server) connected to the backbone network 1 of the information such as the routing protocol or the network topology extracted from the information such as the routing protocol. A request is made and a response to the request is notified to the request interpreter 31.
(3) Network topology or network resources may be stored in a predetermined server. At that time, a request for a network topology or a network resource is made to a predetermined server, and a response to the request is notified to the request interpreter 31.

  The control request processing unit 30 (request interpreting unit 31 in FIG. 3) is created by using the control request in S12 and the control condition in S12 for the control information managing unit 50 (control information extracting unit 51 in FIG. 4). The extracted communication control information extraction conditions are notified (S25). Note that S21, S23, and S25 are in no particular order.

  The control information management unit 50 (control information extraction unit 51 in FIG. 4) instructs the control information management unit 50 (control information DB 53 in FIG. 4) to search for communication control information that matches the extraction conditions in S25 ( S26).

  The control information management unit 50 (control information DB 53 in FIG. 4) extracts and responds to the control information management unit 50 (control information extraction unit 51 in FIG. 4) by extracting communication control information that matches the instruction in S26 ( S27).

  The control information management unit 50 (control information extraction unit 51 in FIG. 4) notifies the control request processing unit 30 (request interpretation unit 31 in FIG. 3) of the communication control information extracted in S27 (S28).

Based on the information received in S22, S24, and S28, the request interpreter 31 is a service that conforms to the request received in S12 and has a clear communication start time, communication end time, and communication band. Create one or more plans. Hereinafter, a method for creating a service plan will be exemplified.
・ The method to minimize the propagation delay between communication and the ground ・ The method to minimize the total consumed bandwidth required by the number of links consumed and the required bandwidth ・ Use the link whose remaining bandwidth is less than the predetermined value when the path is set A method that uses a route that is not used ・ A method that performs communication at the time when the network is vacant within a predetermined time range ・ By switching the path during communication, it is possible to switch to a path with a lower delay from the middle, or more A method of switching to a path that can be used at low cost ・ A method that prevents the remaining bandwidth of each link from falling below a predetermined value by changing the bandwidth during communication, or minimizes the dispersion of the remaining bandwidth of each link. A method that eliminates the need to change the bandwidth ・ A method that eliminates the need to change the route on the way ・ Any changes may be made on the way In Ino, communication method can be realized at low cost

For example, if the required bandwidth is clearly determined as the communication condition from the user program, the required communication time is clearly determined, and the path cannot be switched, the request interpreter 31 The service plan is created by sequentially executing the steps (1) to (4).
(1) Using the network topology, the network resource, and the communication control information at the communication start time of communication between the user terminals 4, a necessary band is provided as a remaining band during a communication time that requires communication control. Create a calculation network topology composed only of links (2) Set a delay in the calculation network topology as a metric for each link in (1) using network resources (3) Use the Dijkstra algorithm ( 2) Find the route with the smallest total metric from the network topology for calculation set in 2). (4) The route obtained in (3) above is considered as one service plan.

  By executing the steps (1) to (4) in order, the communication delay is as small as possible (the communication is sensitively affected by the communication delay). In the meantime, it is possible to design a path with the smallest communication delay in the communication band, and therefore, it is possible to satisfy the requirements of the user program.

  The request interpreter 31 may access the communication history information DB 32 and create a service plan using information stored in the communication history information DB 32 (S29). The communication history information DB 32 stores a history of what service is adopted for each user. Further, the communication history information DB 32 includes, for each user program, at least one of a user program name, a user program identifier, a protocol name, a protocol identifier, a port number, and a quality level of an image, video, and audio to be communicated. Information necessary to determine an appropriate length of communication time and bandwidth from one piece of information is stored.

  For example, when the communication plan is used for IP phone use and the communication history information DB 32 is not used, the service plan adopted adopts a usage time that can accommodate most of the general communication, Create a service plan. On the other hand, when using the communication history information DB 32, a service plan for communication control is created by adopting a usage time that can accommodate most of the communication specialized for the IP phone.

  The control request processing unit 30 (the request interpreting unit 31 in FIG. 3) notifies the control request receiving unit 20 of the service plan created based on S28 or S29 (S31).

  The control request receiving unit 20 notifies the user program processing unit 10 of the service plan notified in S31 (S32).

  The user program processing unit 10 selects a service plan to be used for communication control from the service plan notified in S31, as desired by the user (S40).

  The user program processing unit 10 notifies the control request reception unit 20 of the service plan selected in S40 (S41).

  The control request reception unit 20 transmits the service plan notified in S41 to the control information management unit 50 (control information storage unit 52 in FIG. 4) as communication control information and requests to store it (S42). .

  The control information management unit 50 (control information storage unit 52 in FIG. 4) stores the communication control information requested in S42 in the control information management unit 50 (control information DB 53 in FIG. 4) (S43).

  The control information management unit 50 (control information storage unit 52 in FIG. 4) immediately starts communication with the control information management unit 50 (control information detection unit 54 in FIG. 4) in response to the communication control information requested in S42. If it is a service that needs to be performed, at the same time as S43, it is notified that there is a service that immediately starts communication or the service itself that immediately starts communication (S44).

  The communication control instruction unit 60 requests communication control information such as path setting, release, and state change from the control information management unit 50 (control information detection unit 54 in FIG. 4) (S50). In addition, the opportunity which S50 generate | occur | produces is regular, for example. Further, S50 may be omitted.

The control information detection unit 54 in FIG. 4 detects communication control information that needs to be subjected to communication control with respect to the control information DB 53 in FIG. 4 (S51). The execution trigger of S51 includes the following triggers, for example.
-Periodic-When a request is received from the communication control instruction unit 60 in S50-When a request is received from the control information storage unit 52 in S44-A timer at the time when the control information in the control information DB 53 exists is used as a trigger . For example, when communication is scheduled to start (communication control is executed) from 8:00, 10:30, and 12:00, the respective times (8:00, 10:30, 12:00) are reached. Sometimes, it is notified that there is control information to be subjected to communication control.

  The control information DB 53 in FIG. 4 notifies the control information detection unit 54 in FIG. 4 of the communication control information as a detection result for the detection of the communication control information in S51 (S52).

  4 notifies the communication control instruction unit 60 of the communication control information notified in S52 (S53).

The communication control instruction unit 60 performs communication control on the backbone network 1 according to the communication control information of S53 (S60). Further, the communication control may target the backbone network 1 and the peripheral network 2 or only the peripheral network 2. The communication control is exemplified by the following method, for example.
-Communicate with the backbone network 1 device and change the setting of packet transfer priority control by Diffserv-Control the path to the node 3 such as a router using a signaling protocol such as MPLS or GMPLS such as RSVP-TE The path is controlled by accessing each node 3 using the CLI or accessing each node 3 using a protocol such as TL1. Note that examples of protocols accessed by the CLI include telnet and ssh.

  The user program processing unit 10 performs communication controlled in S60 to the user program processing unit 10 of the communication partner (S70).

It is a block diagram which shows the whole communication system regarding one Embodiment of this invention. It is a block diagram which shows the control request | requirement reception part regarding one Embodiment of this invention. It is a block diagram which shows the control request process part regarding one Embodiment of this invention. It is a block diagram which shows the control information management part regarding one Embodiment of this invention. It is a flowchart which shows the process of the communication system regarding one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core network 2 Peripheral network 3 Node 4 User terminal 5 Communication control apparatus 10 User program processing part 20 Control request reception part 30 Control request processing part 31 Request interpretation part 32 Communication history information DB
41 Network topology management unit 42 Network resource management unit 50 Control information management unit 51 Control information extraction unit 52 Control information storage unit 53 Control information DB
54 Control Information Detection Unit 60 Communication Control Instruction Unit

Claims (11)

A communication control method for controlling communication between user terminals set on a communication network,
Computer
A procedure for acquiring from the user terminal a control condition indicating a predetermined range in which a plurality of patterns can be created with respect to a communication start time, a communication end time, and a communication band related to the communication subject to communication control;
A procedure for acquiring communication control information satisfying an extraction condition created based on the network topology, network resources, and the control conditions as the communication network information,
Based on the acquired information of the communication network, a procedure for creating one or more service plans with clear communication start time, communication end time, and communication bandwidth that satisfy the control conditions;
A procedure for performing the communication control based on the service plan selected by the user terminal;
The communication control method characterized by performing. 2. The communication control method according to claim 1, wherein the procedure for creating one or more service plans is to create the service plans by sequentially executing the following steps (1) to (4). .
(1) Remaining a necessary band during a communication time that requires the communication control using the network topology, the network resource, and the communication control information at the start time of communication between the user terminals (2) A delay of each link is set in the calculation network topology as a metric for each link in (1) using the network resource. 3) Using the Dijkstra algorithm, obtain the route with the smallest total metric from the network topology for calculation set in (2). (4) The route obtained in (3) is one service plan.   The procedure for creating one or more service plans is to create one or more service plans based on a history of what service is adopted stored for each user in the communication history information DB. The communication control method according to claim 1, wherein:   The procedure for creating one or more service plans includes a user program name, a user program identifier, a protocol name, a protocol identifier, a port number, and a communication image and video stored for each user program in the communication history information DB. And at least one of the service plans based on information necessary for determining an appropriate communication time length and bandwidth from at least one of the voice quality levels. The communication control method according to claim 1 or 2.   The procedure for performing the communication control includes performing the communication control immediately after accumulating the service plan in a storage unit based on the service plan for starting communication immediately. 5. The communication control method according to any one of 4 above.   6. The procedure for performing the communication control includes controlling a path on the communication network by MPLS or GMPLS for a communication apparatus on the communication network. The communication control method according to the item.   The communication control according to any one of claims 1 to 5, wherein the step of performing the communication control sets packet transfer priority control by Diffserv for a communication device on the communication network. Method. A communication control device for controlling communication between user terminals set on a communication network,

Control request acceptance for acquiring from the user terminal a control condition indicating a predetermined range in which a plurality of patterns can be created for a communication start time, a communication end time, and a communication band related to the communication subject to the communication control And
A control request processing unit for acquiring communication control information satisfying an extraction condition created based on the network topology, network resources, and the control conditions as the communication network information;
Based on the acquired information of the communication network, a request interpreting unit that creates one or more service plans that have a communication start time, a communication end time, and a communication band that satisfy the control conditions;
The communication control instruction unit for performing the communication control based on the service plan selected by the user terminal;
A communication control device comprising: The communication control apparatus according to claim 8, wherein the request interpretation unit creates the service plan by sequentially executing the following steps (1) to (4).
(1) Remaining a necessary band during a communication time that requires the communication control using the network topology, the network resource, and the communication control information at the start time of communication between the user terminals (2) A delay of each link is set in the calculation network topology as a metric for each link in (1) using the network resource. 3) Using the Dijkstra algorithm, obtain the route with the smallest total metric from the network topology for calculation set in (2). (4) The route obtained in (3) is one service plan.   9. The request interpreting unit creates one or more of the service plans based on a history of what service is adopted, which is stored for each user in the communication history information DB. The communication control device according to 1.   The request interpreter stores a user program name, a user program identifier, a protocol name, a protocol identifier, a port number, and the quality of an image, video, and audio for communication, which are stored for each user program in the communication history information DB. 9. One or more of the service plans are created based on information necessary to determine an appropriate communication time length and bandwidth from at least one of the levels. 9. The communication control device according to 9.

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