KR20070024099A - Multicast ip address management system and method thereof - Google Patents

Abstract

A multicast address management system and a method thereof are provided to offer systematical multicast addresses and increase the efficiency of multicast services. A multicast address management system comprises an address management module(340), an address masking module(330), a service management and storage module(360), and an address allocation module(320). The address management module(340) stores a plurality of multicast addresses in a plurality of address pools according to pre-appointed address classification information, and allocates a temporary address specified on the basis of the address pools. The address masking module(330) executes masking on the basis of the temporary address and creates a specific multicast address. The service management and storage module(360) stores contents of a service for a specific multicast address allocated to an operation server and information about a requester, and comprises a table for multicast address management. The address allocation module(320) controls the address management module(340) and the address masking module(330) according to a multicast address allocation request transmitted from the operation server, acquires a specific multicast address, and transmits it to the service management and storage module(360).

Description

Multicast address management system and its method {MULTICAST IP ADDRESS MANAGEMENT SYSTEM AND METHOD THEREOF}

1 is a block diagram illustrating a multicast service network network using a multicast address management system according to an exemplary embodiment of the present invention.

2 is a block diagram illustrating a multicast address management system according to an exemplary embodiment of the present invention.

3 is a detailed block diagram illustrating an address management module of a multicast address management system according to an exemplary embodiment of the present invention.

4 is a detailed block diagram illustrating an address allocation module of a multicast address management system according to an exemplary embodiment of the present invention.

5A through 5E are block diagrams illustrating address classifications of a multicast address management system according to an exemplary embodiment of the present invention.

6 is a block diagram illustrating an example of address allocation in a multicast address management system according to an embodiment of the present invention.

7 is a flowchart illustrating an address management method of a multicast address management system according to an exemplary embodiment of the present invention.

The present invention relates to a multicast address management system and method thereof.

More specifically, the present invention relates to a multicast address management system and method for systematically managing a multicast service on a high speed Internet.

Representative methods used for data transmission on the Internet include a unicast method, a broadcast method, and a multicast method.

In the unicast method, a 1: 1 session is established between a server and a client host, and distributed hosts transmit video and audio in real time. The broadcast method simultaneously transmits data to all hosts in a band.

This unicast method has the disadvantage of degrading the efficiency of the communication network due to the occurrence of a lot of traffic in 1: 1 transmission.In the broadcast method, data is transmitted to an undesired host, so the number of hops between the server and the host increases, which leads to unnecessary traffic. There is a disadvantage in that the amount of.

On the other hand, the multicast method combines the advantages of the unicast method and the broadcast method to transmit data only to the hosts of a specified group member at a time, and does not affect hosts other than the group member. Data can be delivered with minimal traffic.

This multicast method is suitable for application services that deliver data to multiple people at the same time. Such services include IP-based real-time TV, music distribution, and streaming services such as Internet broadcasting.

Multicast addresses include the Internet Assigned Numbers Authority (IANA); Internet allocation number was assigned as follows by the authority.

224.0.0.0-224.0.0.255 (224.0.0 / 24) Local Network Control Block

224.0.1.0-224.0.1.255 (224.0.1 / 24) Internetwork Control Block

224.0.2.0-224.0.255.0 AD-HOC Block

224.1.0.0-224.1.255.255 (224.1 / 16) ST Multicast Groups

224.2.0.0-224.2.255.255 (224.2 / 16) SDP / SAP Block

224.252.0.0-224.255.255.255 DIS Transient Block

225.0.0.0-231.255.255.255 RESERVED

232.0.0.0-232.255.255.255 (232/8) Source Specific Multicast Block

233.0.0.0-233.255.255.255 (233/8) GLOP Block

234.0.0.0-238.255.255.255 RESERVED

239.0.0.0-239.255.255.255 (239/8) Administratively Scoped Block

The number of available multicast addresses in the multicast method is 268,435,456 (= 16 * 256 * 256 * 256). Furthermore, if the Internet network is separated and managed locally by the multicast protocol, multicast addresses can be used indefinitely due to the reuse of addresses.

However, even if there are many available addresses, there is always a possibility of mutual collision between multicast IPs.

Application of Multicast Protocol The larger the network size, the more systems that operate multicast services, the greater the possibility of mutual collision.

Conflicts between multicast addresses can result in discarding conflicting source traffic at network equipment, making it impossible to provide service or delivering invalid data to unsolicited multicast group members.

In order to systematically solve the problem of address collision, MADCAP (Multicast Address Dynamic Client Allocation Protocol, RFC2730; hereinafter referred to as MACAP) and SSM (Source Specified Multicast, RFC3569; hereinafter referred to as SSM) are proposed. have. MADCAP is a method of assigning an address based on the concept of Multicast Address Allocation Architecture (RFC3082) to a host that requests a multicast address, similar to a Dynamic Host Configuration Protocol (DHCP) server at the network layer (TCP or UDP). . This method has the advantage of being able to assign IP quickly without duplicating the address while reducing the network load based on the network protocol. However, since it is a network protocol, it is not possible to manage the address according to the type or content of the content. . In other words, regardless of the contents of the service, it is impossible to manage the service by assigning an address mechanically.

SSM, like MADCAP, can prevent the duplication of multicast services in a fundamental manner. In general multicast, multicast addresses are divided into groups or channels (*, G), whereas in SSM, multicast is used. Are identified by pairing source IP addresses that generate traffic (S, G). Here, S represents an IP address of a host generating multicast traffic, and G represents a multicast group address.

Therefore, even if the group address G matches, the source IP address S is recognized as a different group when the source IP address S is different, thereby preventing a service collision.

This SSM method is available only in IGMP v3 (Internet Group Management Protocol Version 3), and has a disadvantage in that service management is not possible. In addition, traffic collision may occur due to the similar (S, G) format suggested by the source IP of the media server generating the multicast traffic.

Although the MADCAP method and the SSM method suggest a method of reducing the collision of multicast addresses, the possibility of collision still exists, and there is a disadvantage in that the service efficiency is low because there is no classification system according to the content or format. do.

In the case of using such a conventional multicast network, there is a possibility that a collision of multicast addresses may occur, and there is a problem in that service efficiency is low because there is no classification system according to contents or format.

Accordingly, the present invention is to solve the above problems, multicast address assignment by the multicast address based on the classification scheme according to the content content or format to prevent the multicast address collision, multicast service that can increase the efficiency of the multicast service An address management system and a method thereof are provided.

In order to solve the above technical problem, according to the first aspect of the present invention, a multicast address management system for providing a specific multicast address by request of the operation server,

An address management module for allocating and storing a plurality of multicast addresses in an address pool according to predetermined address classification information and allocating a specific temporary address based on the stored address pool; An address masking module for generating a specific multicast address by masking based on a temporary address; A service management storage module configured to store service contents and information on a requestor for a multicast address allocated to an operation server, and including a table for multicast address management; And an address assignment module for controlling the address management module and the address masking module based on the multicast address assignment request received from the operation server to receive a specific multicast address and to transmit the assigned multicast address to the service management storage module. do.

Here, the address assignment module, the address management module, the address management module control unit for making an address assignment request to the address management module, and receives the assigned temporary address according to the request; An address masking module controller which controls the address masking module, requests a masking of a temporary address to the address masking module, and receives a specific multicast address allocated according to the request; And an address allocation controller for controlling the address management module control unit and the address masking module control unit to receive a specific multicast address and transmit the specific multicast address to the service management storage module.

Here, the address management module includes a multicast address storage unit for storing a plurality of multicast addresses available as a multicast address; A service classification unit which stores predetermined address classification information; A service pool storage unit for storing a plurality of multicast addresses according to an address pool based on the service classification unit; And an address allocation logic unit that controls the multicast address storage unit, the service classification unit, and the service pool storage unit, and allocates a temporary address based on the service pool storage unit.

According to a second aspect of the present invention, a method for managing a specific multicast address in response to a request of an operation server in a multicast address management system,

a) performing authentication according to access of the operation server; b) determining whether a multicast address of a specific address pool is in stock on the basis of a multicast address allocation request received from an operation server; c) allocating a temporary address according to a multicast address allocation request because there is an inventory of multicast addresses in a specific address pool; d) determining whether masking is required based on the multicast address assignment request; e) if masking is required, masking the temporary address to assign a specific multicast address; And f) excluding the assigned multicast address from the address pool, storing allocation information in the specific table, including the multicast address requester, the multicast address, and the service type of the requestor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated.

In addition, the term module described herein refers to a unit for processing a specific function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

Now, a multicast address management system and method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a multicast service network network using a multicast address management system according to an exemplary embodiment of the present invention.

As shown in FIG. 1, in the multicast service network according to an exemplary embodiment of the present invention, the multicast address management system 300, the operation server 200, and the hosts 100 and 101 are connected through the Internet and the local subscriber network. It is.

Currently, multicast service is not provided through the Internet backbone network due to the problem of multicast function and network stability of network equipment, but is provided in private network or test network. However, as the multicast function is supported in gateways and routers, the service area is gradually expanded to the high-speed Internet network.

The multicast address management system 300 receives an address assignment from a regional operation server 200 located in one place on the Internet and scatters the addresses to prevent mutual address collisions based on address classification information set by an administrator. Assign and save and manage its contents.

In addition, the multicast address management system 300 provides a multicast service status by a request of the operation server 200 in a web format.

In addition, the multicast address management system 300 processes through the return or change procedure when returning or changing the address assigned to the operation server 200, and the periodic or set period (multicast address set at the time of multicast address allocation) Return the multicast address according to the period of use).

The operation server 200 is a local operation server, and includes a web server such as a media server, a service authentication server, and a service information server, and provides streaming-oriented services such as video or music to hosts set as a group.

The operation server 200 includes an Internet Service Provider (ISP) or a Network Service Provider (NSP).

The hosts 100 and 101 are registered in a specific group of the operation server 200 to receive a multicast service.

As described above, the multicast address management system of the multicast service network of the present invention allocates a specific multicast address that is efficiently selected by a request of the operation server, and the operation server specifies the specific multicast address based on the assigned multicast address. Multicast service is provided to hosts registered as a group.

The following describes a multicast address management system that provides a multicast address without collision to an operation server according to a specific service registration of an operator according to an embodiment of the present invention.

2 is a block diagram illustrating a multicast address management system according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the multicast address management system 300 according to an embodiment of the present invention multicasts a request of the operation server 200 of FIG. 2 based on an address classification information assignment set by an administrator. Address assignment, storing the assigned address to provide a conflict-free multicast address, address assignment module 320, address management module 340, address masking module 330, web providing module 350, service management Storage module (DB) 360 and communication module 310.

The address assignment module 320 authenticates the operator information of the operation server 200 received from the web provision module 350 based on the operator information of the service management storage module (DB) 360, and the web provision module 350. Analyzes the multicast address allocation request received from the multicast address allocation request to the address management module 340, and assigns the received temporary address (IP) to a specific multicast address or transmits the masking module according to the allocation request. Do it. Then, the allocated specific multicast address is stored in the service management storage module 360.

Here, the multicast address allocation request of the web providing module 350 includes information of a service received from the operation server 200, service management information, and whether masking is applied, and the service information includes a service type, a management type, and service content. The service management information includes a service providing period, an address allocation format, and multicast service platform information.

In addition, the address assignment module 320 checks whether the multicast address is periodically used by the operation server 200 and returns the allocated multicast address or is set based on a multicast address assignment request received from the operation server 200. It checks whether the multicast address is used by the multicast address usage period and returns the multicast address.

The address management module 340 allocates a multicast address to an address pool according to the address classification information based on the address classification information set by an administrator, and stores the allocated service pool for each service. Then, a specific multicast address of the assigned address pool is provided based on the address assignment request data received from the address assignment module 320. Here, the address pool refers to a package in which the multicast address is stored according to the service format.

In addition, the address management module 340 dynamically allocates a multicast address and allocates a multicast address remaining in stock to a specific service address pool which is out of stock of the multicast address.

The address masking module 330 performs masking on the temporary address according to a masking request of the address assignment module 320 in order to quickly distinguish between a specific operator or a specific purpose service. Here, masking includes a method of separating a multicast address into a predetermined size, a method using a TCP / UDP port number, a method of masking the lower 8 bits of a multicast address, and a method of masking using all three methods. .

Web (Web) providing module 350 is based on the graphical user interface (GUI), provides a procedure required for multicast address allocation to the operation server 200, service information and service management information input from the operation server 200 Based on the multicast address allocation request is generated and transmitted to the address assignment module 320. In addition, the operator information for authentication is received from the operation server 200 and transmitted to the address assignment module 320.

The service management storage module (DB) 360 stores service information and all information on the requestor for the multicast address assigned to the operation server 200, and in particular, the multicast address requester, the multicast address, and the service of the requestor. Contains a table containing the kinds.

The communication module 310 is connected to the Internet network serves to transmit the data transmitted from the operation server to the Web (Web) providing module 350.

3 is a detailed block diagram illustrating an address management module of a multicast address management system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the address management module 340 of the multicast address management system 300 according to an embodiment of the present invention classifies an entire address of a multicast address based on address classification information set by an administrator. According to the information assigned to the address pool (Pool), and stores the assigned address pool (Pool), multicast address storage unit 342, service classification unit 344, address allocation logic unit 346, service pool ( Pool) storage unit 348.

The multicast address storage unit 342 stores an address that can be used as a multicast address, and provides the stored address information to the address assignment logic unit 346.

The service classification unit 344 stores address classification information set by an administrator, and provides the address classification information to the address assignment logic unit 346. Here, the address classification information includes a service classification rule, and the service classification rule includes a rule for allocating a multicast service and a multicast address one-to-one, a rule that requires a multicast address structure to be hierarchically, and addresses according to services. Include rules that should be classified as.

The address allocation logic unit 346 allocates a service pool by assigning an entire address of the multicast address read from the multicast address storage unit 342 according to the address classification information of the service classification unit 344. Stored in the pool storage unit 348. In addition, the address assignment logic unit 346 allocates a specified multicast address of a specific address pool stored in the service pool storage unit 348 based on the address assignment request data received from the address assignment module 320. In addition, the allocated multicast address is excluded from the corresponding address pool in the service pool storage. In addition, the address allocation logic unit 346 includes an IP allocation logic unit 345 and a dynamic allocation logic unit 347.

The IP allocation logic unit 345 allocates an address pool for each service by weighting the multicast entire addresses of the multicast address storage unit 342 for each service based on the address classification information of the service classifier 344. Play a role. Here, the weight for each service initially has the same value, and changes according to the reallocation of the service address pool of the dynamic allocation logic unit 347.

The dynamic allocation logic unit 347 may be configured to determine that a specific service pool having a large number of multicast addresses is left in a specific service pool that lacks a multicast address when the multicast address of a specific service address pool stored in the service pool storage is insufficient. It is responsible for reallocating multicast addresses.

The service pool storage unit 348 stores the multicast address in a plurality of address pools received from the address allocation logic unit 346.

As described above, the multicast address management system of the present invention includes an address management module for allocating and managing systematic addresses for each service, and has the advantage of assigning systematic multicast addresses to contents or services to users. .

The following describes in detail the address allocation of the address allocation module of the multicast address management system of the present invention.

4 is a detailed block diagram illustrating an address allocation module of a multicast address management system according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the address assignment module 350 according to an embodiment of the present invention authenticates the operator information of the received operation server 200 based on the operator information of the service management storage module (DB) 360. .

In addition, the address assignment module 350 analyzes the multicast address assignment request received from the web providing module 350 and makes an address assignment request to the address management module 340 to be assigned a temporary address (IP), IP) is assigned to a specific multicast address or a masking request for a temporary address (IP) is performed by the address masking module 330 to receive a specific multicast address that has been masked. Then, the allocated specific multicast address is stored in the service management storage module 360.

In addition, the address assignment module 350 includes an authentication unit 322, an address assignment control unit 324, an address management module control unit 328, and an address masking module control unit 326.

The authentication unit 322 authenticates the operator information of the received operation server 200 based on the operator information of the service management storage module (DB) 360.

The address assignment control unit 324 controls the address management module control unit 328 or the address masking module control unit 326 and allocates a specific multicast address based on a temporary address (IP) assigned from the address management module control unit 328. Receive or transmit a masked specific multicast address to the address masking module controller. Then, the allocated multicast address, service type, and operator information are transmitted to the service management storage module 360.

The address management module control unit 328 generates and transmits address allocation request data to the address management module 340 at the request of the address allocation control unit 324, receives a multicast address from the address management module 340, and allocates the multicast address. The received multicast address is transmitted to the address assignment control unit 324.

The address masking module control unit 326 generates and transmits a masking request message to the address masking module 330 at the request of the address allocation control unit 324, receives a multicast address from the address masking module 330, and receives the multicast address. The multicast address is transmitted to the address assignment control unit 324.

Such a multicast address management system has an advantage of effectively allocating a multicast address according to a specific service, thereby preventing collisions and increasing the efficiency of the multicast service.

Next, the service classification system of the multicast address management system will be described.

5A through 5E are block diagrams illustrating address classifications of a multicast address management system according to an exemplary embodiment of the present invention.

As shown in Figure 5a, the address classification in the address management module 340 of the multicast address management system according to an embodiment of the present invention is the service type 400, management area 410, service type 420, description / Hierarchical structure of the function (430).

Here, the structure of address classification includes the content, number and order of layers, and detailed classification contents for each layer, and may be set differently according to a multicast service provider or operator.

 As shown in FIG. 5B, the detailed classification of the service type 400 according to the exemplary embodiment of the present invention is classified for each service provider, and detailed classification of the service type 400 provided for each service provider is performed.

According to an embodiment of the present invention, the service type is divided into the service provider A and the service provider A, and the service provider A has subdivided divisions of B2B (Business to Business), B2C (Business to Customer), and C2C (Customer to Customer). Business to Customer (B2C) also has distinct services for commercial, non-commercial and experimental / research.

Here, the subdivision means the multicast address division of class A of FIG. 6 shown below. For details, refer to FIG. 6 below showing a detailed service division according to an embodiment of the present invention.

As shown in FIG. 5C, the management area 410 is classified according to a nationwide or regional service, and detailed management area 410 is provided for each service.

In an embodiment of the present invention, the service type is divided into national service and regional service, and the regional service has a subdivided division of the metropolitan Gangbuk area, the metropolitan Gangnam area, the western part of the metropolitan area, and Jeju area. In addition, the Gangbuk area of the metropolitan area has service divisions such as Gangbuk branch, Gwangjin branch, Wonhyo branch, and Guri branch.

Here, the subdivision means the multicast address division of class B of FIG. 6 shown below. For details, refer to FIG. 6 below showing a detailed service division according to an embodiment of the present invention.

As shown in FIG. 5D, the classification of the service type 420 according to the embodiment of the present invention may be divided into sports, education, entertainment, culture / art, and religious services, and the service type 420 may be provided for each classified service. Subdivision is made.

In an embodiment of the present invention, the service type is divided into sports, education, entertainment, culture / art, and religious services, and the entertainment service has subdivided divisions such as movie / video, broadcasting, animation, recording, and game. In addition, animation has a service division such as family, adult only, and child use.

Here, the subdivision means the multicast address division of class C of FIG. 6 shown below. For details, refer to FIG. 6 below showing a detailed service division according to an embodiment of the present invention.

As shown in FIG. 5E, the classification of the technology / function 430 according to an embodiment of the present invention is divided into Mobile, Mobility, Fixed, and MF. A detailed division of the technology / function 430 is made.

In an embodiment of the present invention, the technology / function is classified into Mobile (Mobility), Fixed (Fixability), and M-F (Mobile and Fixed), and the Fixed (Fixability) service has a subdivided division of Authentication and Authentication. In addition, the authentication service has service divisions such as QoS (Quality Assurance), NQoS (non-QoS), and CQoS (conditional QoS). In addition, NQoS (QoS non-guaranteed) service has a service division such as DRM, NDRM (DRM not applied). In addition, the NDRM (DRM not applicable) service has service divisions such as high definition (HD), standard definition (SD), and low quality. In addition, the SD (Standard Definition) service has a compression type classification such as MP2, MP4, WMT, and H.264.

Here, the subdivision means the multicast address division of the D classification shown in FIG. 6 shown below. For details, refer to FIG. 6 below showing a detailed service division according to an embodiment of the present invention.

The above service classification is set based on the service information and the service management rule inputted by the administrator in the address management module of the multicast address management system.

The following describes an example of multicast address allocation according to a service type classified by an address management module according to an embodiment of the present invention.

6 is a block diagram illustrating an example of address allocation in a multicast address management system according to an embodiment of the present invention.

As shown in FIG. 6, the multicast address management system according to an embodiment of the present invention manages addresses based on service information and service management rules received from an administrator.

Address allocation according to service division generates a multicast address pool for each service in the address management module 340 of the multicast address management system based on the service of FIGS. 5B to 5E.

In the embodiment of the present invention, although address allocation according to service classification is implemented in IPv4 (Internet Protocol Version 4), it can be extended to IPv6.

7 is a flowchart illustrating an address allocation method of a multicast address management system according to an exemplary embodiment of the present invention.

As shown in FIG. 7, the multicast address management system 300 according to an embodiment of the present invention generates a multicast address pool based on service classification based on service information and service classification rules received from an administrator. Save it.

When the multicast address management system 300 is connected to the operation server 200 (S100), the multicast address management system 300 generates and transmits an operator authentication request message to the operation server 200.

The operation server 200 receives the message, transmits the operator information, and the multicast address management system 300 is stored in the service management storage module 360 based on the operator information received from the operation server 200. It is determined whether the operator can be assigned a multicast address by comparing with the information of the operator (S102, S104).

If authentication of the multicast address management system 300 does not succeed, the multicast address management system 300 releases the connection with the operation server 200 (S105).

In step S104, when the management server 200 successfully authenticates the address management system 300, the multicast address management system 300 receives a request for multicast address allocation information from the management server 200 (S106). ). Here, the multicast address allocation information request includes service information and service management information, the service information includes a service type, a management type, and service contents, and the service management information includes a service providing period, an address allocation type, and a multicast. Contains service platform information.

 The multicast address management system 300 checks the multicast address pool (IP Pool) according to the service on the basis of the multicast address allocation information request (S108), determines whether the multicast address is in stock (S110), and inventory If not, the temporary multicast address is obtained by readjusting the multicast address according to the service (S114).

In step S110, if a stock is in the multicast address according to the service, a temporary multicast address according to the service is secured based on the multicast address allocation information request (S114). Here, the temporary multicast address may be arbitrarily determined by an operator's request of the operation server 200.

Then, the multicast address management system 300 determines whether masking is necessary based on the multicast address allocation request received from the operation server 200 (S116), and if necessary, multicast address management The system 300 allocates a multicast address by applying a mask to the temporary address through masking (S118 and S120). Here, masking is a method of separating a multicast address into a predetermined size, a method using a TCP / UDP port number, a method of masking the lower 8 bits of the multicast address, and a combination of three methods. In the embodiment, a method of generating an address by combining three methods will be used.

Here, the method of dividing a multicast address into a predetermined size is a method of dividing an IPv4 address into group 1 and group 2, and separating the multicast address into groups 1 and 233.0.0.0 to 239.255 having addresses within 224.0.0.0 to 232.255.255.255. Divide into Group 2 with an address within 255.255.

Here, the method using the TCP / UDP port number is a method of specifically allocating and using an IPv4 address. The method determines whether a specific bit is 1 out of 16 bits, and divides it into group 1 or group 2. (For example, 11xx11xx11xx11xx is Group 1, xx11xx11xx11xx11 is Group 2)

Here, a method of masking the lower 8 bits is a method of specifically allocating and using an IPv4 address. The method determines whether a specific bit is 1 among 8 bits and divides it into group 1 or group 2. (For example, 11xx11xx is Group 1, xx11xx11 is Group 2)

In step S118, if masking is not required, the multicast address management system allocates a multicast address based on the temporary address (S120).

Then, the multicast address management system 300 excludes the allocated multicast address from the multicast address pool (S122) and stores the allocated multicast address as a table of the service management storage module 360. (S124). Here, the table includes the requestor, the multicast address, and the service type of the requestor.

Such a multicast address management system can allocate an efficient multicast address according to a content or a service by allocating and managing a multicast address for each content or service according to a user's request, and manages a plurality of assigned addresses. This has the advantage of preventing collision between cast addresses.

The embodiments of the present invention described above are not only implemented through the apparatus and the method, but may also be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation can be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above-described configuration, the multicast address management system for allocating the multicast address by request to the operation server can be expected to prevent the collision of the multicast address, and to increase the efficiency of the multicast service.

In addition, it provides an operator with a systematic multicast address according to the service, and can be expected to provide convenience and safety accordingly.

Claims (15)

In the multicast address management system to provide a specific multicast address by request of the operation server, An address management module for storing a plurality of multicast addresses in a plurality of address pools according to predetermined address classification information and allocating a specific temporary address based on the stored address pools; An address masking module for masking based on the temporary address to generate a specific multicast address; A service management storage module which stores a service content and information on a requestor for a specific multicast address assigned to the operation server, and includes a table for multicast address management; And Controls the address management module and the address masking module based on the multicast address allocation request received from the operation server to allocate a specific multicast address and to transmit the allocated multicast address to the service management storage module. module Multicast address management system comprising a. The method of claim 1, The address assignment module, An address management module controller which controls the address management module, makes an address assignment request to the address management module, and receives an assigned temporary address according to the request; An address masking module controller for controlling the address masking module, requesting masking of the temporary address to the address masking module, and receiving a specific multicast address allocated according to the request; And An address allocation controller for controlling the address management module control unit and the address masking module control unit according to the multicast address allocation request to receive a specific multicast address and transmitting the assigned multicast address to the service management storage module. Multicast address management system comprising a. The method of claim 2, The multicast address allocation request, Service information including a service format, a management format, and service contents received from the operation server; Service management information including a service providing period, an address allocation format, and multicast service platform information; And Multicast address management system, characterized in that it includes whether or not to apply masking. The method of claim 2, The multicast address management system further comprises an authentication unit for authenticating based on operator information received from the operation server. The method of claim 2, The address management module, A multicast address storage unit for storing a plurality of multicast addresses available as a multicast address; A service classification unit which stores predetermined address classification information; A service pool storage unit for storing the plurality of multicast addresses according to an address pool based on the address classification information of the service classification unit; And An address allocation logic unit configured to control the multicast address storage unit, a service classification unit, and a service pool storage unit, and to allocate the temporary address based on the service pool storage unit; Multicast address management system comprising a. The method of claim 5, The address allocation logic unit, An IP (Internet Protocol) assignment logic for classifying the multicast entire addresses of the multicast address storage unit with weights for each service based on predetermined address classification information of the service classifier; And When the number of available multicast addresses of the first address pool stored in the service pool storage unit is less than or equal to a first reference value, a second having a number of available multicast addresses equal to or greater than the first reference value; Dynamic allocation logic for allocating addresses of the address pool to the first address pool Multicast address management system comprising a. The method of claim 6, The weight for each service initially has the same value, and the value varies according to the address pool reallocation of the dynamic allocation logic unit. The method of claim 2, And a web providing module for providing a web for receiving a multicast address allocation request from the operation server. The method according to any one of claims 1 to 8, The address classification information is a multicast address management system characterized in that the hierarchical structure of the service type, management area, service type, technology / function. The method according to any one of claims 1 to 8, The address pool is a multicast address management system that allocates a multicast address according to predetermined address classification information. In the multicast address management system to manage a specific multicast address at the request of the operation server, a) performing authentication according to access of the operation server; b) determining whether the multicast address of the first address pool is in stock based on the multicast address allocation request received from the operation server; c) allocating a temporary address according to the multicast address allocation request because the first address pool is in stock of multicast addresses; d) determining whether masking is necessary based on the multicast address assignment request; e) masking the temporary address and assigning a specific multicast address if the masking is necessary; And f) excluding the allocated multicast address from the address pool, storing allocation information in the specified table, including the multicast address requester, the multicast address, and the service type of the requestor. Multicast address management method comprising a. The method of claim 11, Step b) if there is no inventory of the multicast address, And rebalancing the first address pool. The method of claim 11, If step d) does not require the masking, Allocating the temporary address to a multicasting address. The method according to any one of claims 11 to 13, And the masking generates an address based on a multicast address, a TCP / UDP port address, and an address obtained by masking. The method according to any one of claims 11 to 13, The address pool (Pool) is a multicast address management method characterized in that the multicast address assigned to the service and stored.

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