JP2008187271A - Data transfer method and system - Google Patents

Abstract

To guarantee transfer completion of all data of a specified capacity within a time specified by a user.
The communication control means accepts a connection request including receiving destination information, an information amount of information to be transmitted, and data transfer time designation information from a user terminal on the transmission side in the communication control means, and the information of the information of the connection request A bandwidth securing request is made to the bandwidth management means based on the amount and the data transfer time designation information, and the bandwidth management means confirms whether the bandwidth can be secured in response to the bandwidth securing request from the communication control means. Determines whether the transmission is completed within the specified time, and if the bandwidth can be secured and transmission is possible within the time, the operating condition given from the bandwidth management means in the service edge means Based on the above, the required bandwidth between the end-to-end is secured by transmitting the packet designated from the user terminal on the transmission side.
[Selection] Figure 1

Description

  The present invention relates to a data transfer method and system in a packet communication network, and in particular, using a packet communication network capable of end-to-end bandwidth management, data of a certain amount of information transmitted by an originating user within a specified time. The present invention relates to a data transfer method and system in a packet communication network for transferring to a receiving user.

  In a conventional best-effort data transfer system using the Internet or the like, communication resources such as bandwidth cannot be managed end-to-end, and therefore communication quality cannot be guaranteed for a certain period of time from end-to-end. It was not possible to guarantee that all data of the desired capacity was transferred within the specified time.

In a conventional MHS (message handling system) for electronic mail, a technique has been proposed in which delivery is performed as close as possible to a specified date and time (see, for example, Patent Document 1).
Japanese Patent No. 2526075

  However, since the method disclosed in Patent Document 1 is not intended for large-capacity data that has been increasingly used for communication over a network in recent years, all data having a desired capacity is transferred within a specified time. Can't solve the problem of not being able to.

  In recent years, high-speed communication lines such as optical broadband have rapidly spread. However, in order to provide a low-cost data transfer service for general consumers, a best-effort service with a contract content such as “100 Mbps under the best conditions” is provided. Basic. In this case, there is no means for guaranteeing whether or not all transmitted data will reach the other party within a predetermined time. For this reason, a user who is chased by time such as a salaryman or a housewife cannot receive a service such as requesting and acquiring a transmission source 5 minutes before the time when a desired video file is desired to be secured.

  The present invention has been made in view of the above points. In a packet communication network in which traffic is statistically multiplexed, it is possible to guarantee the completion of transfer of all data of a specified capacity within a user-specified time. It is an object of the present invention to provide a time designation service method and system in a simple packet communication network.

  FIG. 1 is a diagram for explaining the principle of the present invention.

The present invention (Claim 1) is a data transfer method in a packet communication network,
The packet communication network includes transfer means for transferring main information from the caller side to the callee side, service edge means provided in the transfer means, communication control means comprising a plurality of communication control servers, and bandwidth management means.
In communication control means,
A connection request including receiving destination information, information amount of information to be transmitted, and data transfer time designation information is received from the user terminal on the transmission side via the transfer means (step 1), and the information amount included in the connection request and the information amount Based on the data transfer time designation information, a bandwidth securing request for securing an end-to-end bandwidth between users on the sending side and the receiving side is made to the bandwidth management means (step 2),
In the bandwidth management means,
In response to a bandwidth securing request from the communication control means, it is determined whether the bandwidth can be secured by referring to the bandwidth information of the storage means in the bandwidth management means, and is transmitted by referring to the topology information of the storage means It is determined whether the amount of information specified from the user terminal is completed within the specified time (step 3). If the bandwidth can be secured and transmission is possible within the time, The communication control means is notified (step 4), and an operating condition is given to the service edge means provided in the transfer means so that the packet from the user terminal on the transmission side can be passed while securing the bandwidth. (Step 5),
In service edge means,
After completion of service negotiation and network setting between the calling user terminal and the receiving user terminal (step 6), the packet designated from the calling user terminal is transmitted based on the operating conditions given by the bandwidth management means. Thus, the required bandwidth between end-to-end is secured (step 7).

  FIG. 2 is a principle configuration diagram of the present invention.

The present invention (Claim 2) is a data transfer system in a packet communication network,
The packet communication network includes a transfer means 400 for transferring main information from the caller side to the callee side, a service edge means 410 provided in the transfer means 400, a communication control means 500 comprising a plurality of communication control servers 510, and a bandwidth management means 300. Including
The communication control means 500
A connection request including receiving destination information, information amount of information to be transmitted, and data transfer time designation information is received from the user terminal 130 on the transmission side via the transfer means 400, and the information amount included in the connection request and the data transfer Based on the time designation information, a bandwidth securing request for securing an end-to-end bandwidth between the user on the transmission side and the reception side is made to the bandwidth management means 300,
The bandwidth management means 300
In response to the bandwidth securing request from the communication control unit 500, it is determined whether the bandwidth can be secured by referring to the bandwidth information of the storage unit in the bandwidth management unit 300, and the topology information of the storage unit is referred to When the transmission is completed within the specified time, the amount of information specified from the calling user terminal is determined, and if the bandwidth can be secured and transmission is possible within the time, An operation condition is given to the service edge unit 410 provided in the transfer unit 400 so that the packet from the user terminal 130 can pass through,
Service edge means 410
After the service negotiation between the calling user terminal 130 and the receiving user terminal 140 and completion of the network setting, the packet designated from the calling user terminal 130 is transmitted based on the operating conditions given from the bandwidth management means 300. To secure the required bandwidth between end-to-end.

  According to the present invention, the "communication control means", "bandwidth management means", and "service edge means", which were not found in the conventional best-effort system, are based on the transfer data amount and transfer time designated by the user on the calling side. A communication band can be secured from end to end. As a result, the time required for monitoring and transmission / reception to be completed for the information requested by the caller or callee can be designated in advance by the caller or callee, and the reception can be reliably completed within the specified time. It becomes possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 3 shows a configuration of a communication network system according to an embodiment of the present invention.

  The communication network system shown in the figure includes a user network 100, an access network 200, a bandwidth management unit 300, a core network 400, a communication control plane 500, and a communication control system application server group 600.

  The user network 100 includes a transmission side and a reception side, and includes HGWs (Home Gate Ways) 110a and 110b connected to various terminal devices such as computers, mobile terminals, and telephones. Optical Network Unit (optical network terminal device) 210. The transmitting and receiving HGWs 110a and 110b have a client function for call control and an audio stream control function as access terminals. Various terminal devices of the user network 100 use SIP (Session Initiation Protocol) as connection requests to send connection requests including destination information (destination address, telephone number, etc.), information amount of data to be transferred, and desired data transfer time. Use to send.

  The access network 200 includes ONUs 210a and 210b and OLTs (Optical Line Terminals) 220a and 220b on the transmission side and the reception side, respectively. The ONU 210a performs electrical signal / light conversion and optical signal multiplexing, and the ONU 210b performs optical / electrical signal conversion and optical signal separation. The OLTs 220a and 220b are connected to the service edges 410a and 410b of the core network 400.

  The bandwidth management unit 300 includes a network connection control unit (NACF: Network Attachment Control Functions) 310 and a resource reception control unit (RACF: Resource and Admission Control Functions) 320, and responds to a bandwidth securing request from the communication control plane 500. A storage means (not shown) storing bandwidth information and network topology information indicating whether the bandwidth included in the bandwidth securing request can be secured and whether the bandwidth can be transferred at a designated time. If the bandwidth is securable and can be transferred within the specified time, the service edge 410 is operated so that the packet according to the secured bandwidth can pass. Instruct.

  The core network 400 includes service edges 410a and 410b provided on the reception side and the transmission side, a plurality of edge routers 420, a plurality of relay routers 430, and an optical cross-connect device 440, respectively. The service edge 410 is set so that traffic according to the band secured from the RACF 320 of the area management device 300 can pass.

  The communication control plane 500 includes a subscriber session control server 510 and a relay session control server 520. In the session control server 510 on the transmission side, the terminal of the user network 100 (both on the transmission side and the reception side is possible). The bandwidth management unit 300 receives a request to receive the designated information within a designated time, and secures an end-to-end bandwidth that connects transmission / reception users calculated based on the information amount and time of the designated information. To request.

  Each server of the communication control system application server group 600 is a server that is accessed when the content of using an additional service is included in the connection request. For example, an IN system server 610 and an FMC (Mixed Mobile Convergence) server 620 are used. And a presence server 630.

  In the system shown in FIG. 3, a configuration including the service edge router 410 and the edge router 420 of the core network 400 and the session control server 510 of the communication control plane 500 is defined as one edge node A and D. A configuration including a plurality of relay routers 430 and a relay session control server 520 is referred to as relay nodes B and C.

  In the configuration shown in FIG. 3, user data (main information) transmitted from a terminal device such as a user's computer or mobile terminal on the transmission side includes user network 100 (transmission side), access network 200 (transmission side), core The network 400, the access network 200 (receiving side), and the user network 100 (receiving side) are transferred to the receiving side user terminal via the packet communication network.

  On the other hand, a control signal for securing a connection request or bandwidth is sent from the core network 400 to the communication control plane 500, and the following processing is performed.

  (1) First, an operation for starting communication will be described.

  FIG. 4 is a diagram for explaining the operation at the time of a connection request in one embodiment of the present invention. In the system shown in the figure, control signals are exchanged between two or more clients between a user on the transmission side and a user on the reception side using SIP (Session Initiation Protocol). When a connection request is sent from the terminal of the user on the transmission side in the user network 100 using SIP, the session of the access network 200 (calling side), the core network 300 (calling side), and the edge node A of the communication control plane 500 Control server 510 (subscriber system), relay node B session control server 520 (relay system), relay node C session control server 520 (relay system), edge node D session control server (subscriber system), and access The data is transmitted to the terminal device of the user in the user network 100 on the receiving side via the network 200.

  (2) Next, an operation for performing user authentication will be described.

  FIG. 5 is a diagram for explaining the operation of user authentication in the embodiment of the present invention.

  In the operation of FIG. 4, the session control server 510 of the calling-side edge node that has received the connection request from the calling-side user extracts the calling-party user's calling IP address from the connection request and sends the calling IP to the NACF 310. Request authentication that the address is the same as that given to the originating user. As a result, the NACF 310 searches for an IP address stored in an internal storage unit (not shown), authenticates the source IP address, and returns an authentication result to the session control server 510a.

  (3) Next, the operation of securing the bandwidth will be described.

  FIG. 6 is a diagram for explaining the band securing operation according to the embodiment of the present invention.

  The session control server 510a of the calling-side edge node A that has received the connection request from the calling-side user makes a request for securing the bandwidth to the RACF 320. Thereby, RACF 320 refers to the availability of network bandwidth information stored in internal storage means (not shown), and determines whether the bandwidth can be secured. At this time, if it is confirmed that a bandwidth equal to or greater than the required bandwidth calculated based on the information amount and time of the designated information can be secured end-to-end in the designated time zone, “reservable” judge. In addition, when the user authentication result in the NACF 310 can be authenticated, the time when the information amount requested by the user on the calling side is specified with reference to the network topology information stored in the storage means (not shown) It confirms whether or not the transmission is completed, and if complete, instructs the session control server 510a to secure the bandwidth.

  (4) Next, an operation for setting a service edge router will be described.

  FIG. 7 is a diagram for explaining a service edge setting operation according to an embodiment of the present invention.

  The RACF 320 grants communication permission to the service edge router 410a of the edge node A so that traffic according to the band secured in the above (3) can pass. The service edge router 410a transmits traffic for which communication is permitted. At this time, the flow rate is restricted so that excessive traffic does not flow to the network.

  (5) Next, the operation when using the additional service will be described.

  FIG. 8 is a diagram for explaining the operation when using the additional service in the embodiment of the present invention.

  When the connection request of (1) above is included, the connection request sent from the user on the transmission side includes information on the presence / absence of the use of the additional service. The session control server 510b of D requests an additional service from any one of the communication control system application server group 600. The session control server 510b communicates with the accessed application server and receives various services.

  (6) Next, the main information communication operation will be described.

  FIG. 9 is a diagram for explaining the operation of main information communication in one embodiment of the present invention.

  When service negotiation between the user terminal of the user network 100 and the user terminal of the reception side and the setting of the above network are completed, main information such as audio and video is transmitted from the user terminal of the transmission side and accessed. The data is transmitted to the terminal of the user on the receiving side of the user network via the network 200 (transmitting side), the core network 400, and the access network 200 (receiving side). At this time, when contention with other services and network resources occurs, a priority packet for ensuring quality is generated at the terminal of the user on the calling side, and communication is performed using the priority packet in each network. And

  The system configuration shown in FIGS. 3 to 9 shown in the above embodiment is an example, the number of edge routers and relay routers in the core network is arbitrary, and the number of session control servers in the communication control plane Is also optional.

  The present invention is not limited to the above-described embodiment, and various modifications and applications can be made within the scope of the claims.

  The present invention is applicable to data transfer in a packet communication network capable of end-to-end bandwidth management.

It is a figure for demonstrating the principle of this invention. It is a principle block diagram of this invention. It is a communication network system block diagram in one embodiment of this invention. It is a figure for demonstrating the operation | movement at the time of the connection request | requirement in one embodiment of this invention. It is a figure for demonstrating the operation | movement of the user authentication in one embodiment of this invention. It is a figure for demonstrating the operation | movement of the band ensuring in one embodiment of this invention. It is a figure for demonstrating the service edge setting operation | movement in one embodiment of this invention. It is a figure for demonstrating the operation | movement at the time of utilization of additional service in one embodiment of this invention. It is a figure for demonstrating the operation | movement of the main information communication in one embodiment of this invention.

Explanation of symbols

100 User network 110 HGW (Home Gate Way)
130 Originating User Terminal 140 Receiving User Terminal 200 Access Network 210 ONU
220 OLT
300 Band management means, Band management device 310 NACF
320 RACF
400 Transfer means, core network 410 Service edge means, service edge router 420 Transfer router, edge router 430 Relay router 500 Communication control means 510, 520 Communication control server, session control server 600 Communication control system application server group 610 IN system server 620 FMC server 630 presence server

Claims (2)

A data transfer method in a packet communication network,
The packet communication network includes transfer means for transferring main information from the caller side to the callee side, service edge means provided in the transfer means, communication control means comprising a plurality of communication control servers, and bandwidth management means.
In the communication control means,
A connection request including reception destination information, information amount of information to be transmitted, and data transfer time designation information is received from the user terminal on the transmission side via the transfer means, and the information amount and the data transfer time included in the connection request are received. Making a bandwidth securing request to the bandwidth management means for securing an end-to-end bandwidth between the user on the sending side and the receiving side based on the designation information;
In the bandwidth management means,
In response to the bandwidth securing request from the communication control means, it is determined whether the bandwidth can be secured by referring to the bandwidth information of the storage means in the bandwidth management means, and the topology information of the storage means is referred to If the transmission is completed within the specified time, the amount of information specified from the calling user terminal is determined, and if the bandwidth can be secured and transmission is possible within the time, Informing the communication control means to the effect, giving the operating condition to the service edge means provided in the transfer means so that the packet from the user terminal on the transmission side can pass through while securing the bandwidth,
In the service edge means,
After completion of service negotiation and network setting between the calling user terminal and the receiving user terminal, a packet designated by the calling user terminal is transmitted based on the operation condition given from the band management means. A data transfer method characterized by securing a required bandwidth between end-to-end. A data transfer system in a packet communication network,
The packet communication network includes transfer means for transferring main information from the caller side to the callee side, service edge means provided in the transfer means, communication control means comprising a plurality of communication control servers, and bandwidth management means.
The communication control means includes
A connection request including reception destination information, information amount of information to be transmitted, and data transfer time designation information is received from the user terminal on the transmission side via the transfer means, and the information amount and the data transfer time included in the connection request are received. Making a bandwidth securing request to the bandwidth management means for securing an end-to-end bandwidth between the user on the sending side and the receiving side based on the designation information;
The bandwidth management means includes
In response to the bandwidth securing request from the communication control means, it is determined whether the bandwidth can be secured by referring to the bandwidth information of the storage means in the bandwidth management means, and the topology information of the storage means is referred to Determining whether or not the transmission of the information amount specified from the user terminal of the transmission is completed within a specified time, and if the bandwidth can be secured and transmission can be performed within the time, An operation condition is given to the service edge means provided in the transfer means so that packets from the user terminal on the transmission side can pass through,
The service edge means includes
After completion of service negotiation and network setting between the calling user terminal and the receiving user terminal, a packet designated by the calling user terminal is transmitted based on the operation condition given from the band management means. A data transfer system characterized by securing a required bandwidth between ends.

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