KR100939526B1 - Session initiation protocol registration method for ad-hoc network and gateway node for the same - Google Patents

Abstract

PURPOSE: An efficient SIP registration method and a gateway node for the same for efficient AD hoc network are provided to reduce traffic of network by quickly completing the SIP registration. CONSTITUTION: A registration request message is generated. The registration request message comprises representative data of the nodes on the ad hoc network and the address information of the gate-way node. The gate-way node performs the sip register in a registration server outside the ad hoc network. The registration request message is transmitted to a registration server(110).

Description

Efficient SIP Registration Method for Ad-hoc Networks and Gateway Nodes for It {Session Initiation Protocol registration method for Ad-hoc Network and gateway node for the same}

The present invention relates to a Session Initiation Protocol (SIP), and more particularly, to a SIP registration process required for a node of an external network of an ad-hoc network to establish a session with a node provided in the ad-hoc network. will be.

Session Initiation Protocol (SIP) registration is defined in RFC 3261, one of the Request for Comments (RFC) specifications. Accordingly, in order for a node of an external network of an ad-hoc network to establish a session with a node belonging to an ad-hoc network, each node of each of the nodes of the ad-hoc network may be connected to a SIP registrar (REGISTRAR) in that external network. Location information must be registered individually in advance.

Therefore, if all the members of the ad hoc network are booted at the same time or the ad hoc network is moved and newly connected to the external network, the nodes in the ad hoc network will attempt to register the SIP at about the same time, and the load of the ad hoc network will increase rapidly. This may occur, and nodes may fail to register. Accordingly, when members of the ad hoc network boot simultaneously or the ad hoc network moves and newly connected to the external network, there is a need for a method for quickly completing the SIP registration process for the ad hoc network while minimizing an increase in the load of the ad hoc network. It is becoming.

The technical problem to be achieved by at least one embodiment of the present invention is to provide a registration method that can quickly complete the SIP registration process efficiently.

Another object of at least one embodiment of the present invention is to provide a gateway node capable of quickly completing an SIP registration process efficiently.

Another technical problem to be achieved by at least one embodiment of the present invention is to provide a computer-readable recording medium storing a computer program that can efficiently complete the SIP registration process efficiently.

In order to achieve the above object, the registration method according to at least one embodiment of the present invention for performing SIP registration to a registration server provided in the ad hoc network and provided outside the ad hoc network, the representative information of the nodes belonging to the ad hoc network and the Generating a registration request message including address information of the gateway node; And transmitting the registration request message to the registration server on behalf of the nodes.

Here, the representative information may be station number information and the address information may be an IP (Internet Protocol) address.

The registration request message may further include information indicating that each of the nodes is a node belonging to an ad hoc network.

Wherein the ad hoc network comprises a main ad hoc network connected to an external network of the ad hoc network and one or more sub ad hoc networks connected to the main ad hoc network, wherein the generating and the transmitting step comprise (a) the sub ad hoc network. Generating the registration request message including representative information of belonging nodes and address information of the sub gateway node; (b) transmitting the registration request message generated in step (a) to a main gateway node belonging to the main ad hoc network; (c) updating the registration request message transmitted from step (b) using address information of the main gateway node; And (d) transmitting the updated registration request message to the registration server. At this time, step (c) replaces the address information of the sub gateway node among the registration request messages transmitted in step (b) with the address information of the main gateway node and sends the registration request message sent in step (b). Can be updated.

In order to achieve the above object, the gateway node according to at least one embodiment of the present invention for registering a Session Initiation Protocol (SIP) with a registration server belonging to an ad hoc network and provided outside of the ad hoc network is a node belonging to the ad hoc network. Request message generation unit for generating a registration request message including the representative information and the address information of the gateway node; And a request message transmitter for transmitting the registration request message to the registration server on behalf of the nodes.

Here, the representative information may be station number information and the address information may be an IP (Internet Protocol) address.

The registration request message may further include information indicating that each of the nodes is a node belonging to an ad hoc network.

Here, the ad hoc network includes a main ad hoc network connected to an external network of the ad hoc network and one or more sub ad hoc networks connected to the main ad hoc network, and the gateway node is provided for each of the main ad hoc network and the sub ad hoc networks. Can be. At this time, the sub gateway node belonging to the sub ad hoc network generates the registration request message including the representative information of the nodes belonging to the sub ad hoc network and the address information of the sub gateway node, and generates the registration request message to the main ad hoc network. Transmits to the main gateway node belonging to the main gateway node, and the main gateway node belonging to the main ad hoc network updates the registration request message transmitted from the sub gateway node using address information of the main gateway node, and updates the updated registration request message. Can be sent to the registration server. At this time, the main gateway node may update the transmitted registration request message by replacing address information of the sub gateway node with the address information of the main gateway node among the transmitted registration request messages.

According to at least one embodiment of the present invention, the SIP registration process can be completed efficiently. Specifically, according to at least one embodiment of the present invention, when members of the ad hoc network are booted at the same time or the ad hoc network is moved and newly connected to the external network, the ad hoc is not performed individually for all nodes in the ad hoc network. A gateway node in the network (where a gateway node means a gateway when the ad hoc network is the main ad hoc network and an ad hoc gateway node when the ad hoc network is a sub ad hoc network) represents (or instead of) all nodes in the ad hoc network. By performing SIP registration only for the gateway node, the same effect as performing SIP registration for other nodes in the ad hoc network can be achieved. Accordingly, SIP registration for the ad hoc network can be achieved. While minimizing the deuhok that the network load can be quickly completed. Thus, the registration scheme according to at least one embodiment of the present invention enables a smooth communication while reducing network traffic by efficiently completing SIP registration when nodes in an ad hoc network want to make a SIP-based VoIP call.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings that illustrate preferred embodiments of the present invention and the accompanying drawings.

Hereinafter, a registration method and a gateway node for the same according to at least one embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a diagram illustrating a hierarchical mobile ad hoc network.

In the present specification, an ad-hoc network is assumed to be a mobile ad-hoc network for convenience of description. Here, the mobile ad hoc network means an ad hoc network that can be moved. In particular, it is assumed herein that the ad hoc network is a mobile ad hoc network connectable to the Internet for convenience of description. Here, the mobile ad hoc network connectable to the Internet refers to a mobile ad hoc network connectable to an external network of the mobile ad hoc network (named 'Internet' in FIGS. 1 and hereinafter for convenience of description). At this time, a specific node in the ad hoc network that connects the ad hoc network with the external network is called a gateway. Nodes in an ad hoc network can communicate with nodes in an external network through a gateway, and vice versa.

However, this description is a description when the mobile ad hoc network is composed of one single ad hoc network, and is described as follows when the mobile ad hoc network is composed of a plurality of ad hoc networks.

At this time, the plurality of ad hoc networks is composed of a main ad hoc network, which is an ad hoc network directly connected to an external network of the mobile ad hoc network, and a sub ad hoc network, which is a plurality of ad hoc networks connected with a main ad hoc network.

As shown in FIG. 1, the mobile ad hoc network may be composed of a main ad hoc network 120 and a plurality of sub ad hoc networks 130, 132, and 134.

When the mobile ad hoc network consists of a plurality of ad hoc networks, each is independent of each other. That is, the ad hoc routing protocol of each of the four ad hoc networks shown in FIG. 1 may be different.

The main ad hoc network serves as a back-bone network in the mobile ad hoc network, the sub ad hoc network is hierarchically connected to the main ad hoc network, and each sub ad hoc network is connected to the Internet through the main ad hoc network, Among the nodes in the sub ad hoc network, a node connecting the sub ad hoc network and the main ad hoc network is called an ad hoc gateway node. In the present specification, the gateway node refers to a node serving as a gateway, specifically, a gateway node in a main ad hoc network means a gateway, and a gateway node in a sub ad hoc network means an ad hoc gateway node. The ad hoc gateway node has an interface in the main ad hoc network as well as an interface in the sub ad hoc network to which the ad hoc gateway node belongs.

On the other hand, as shown in Figure 1, the shaded circle means the ad hoc gateway node, the unshaded circle means the ad hoc node and the identification number 110 means the SIP registrar (REGISTRAR).

As described above, according to the RFC 3261 standard document, a SIP registration server refers to a server that stores location information of each node in a mobile ad hoc network. That is, according to the RFC 3261 standard, in order for a node of an external network of an ad hoc network to establish a session with a node belonging to an ad hoc network, the location information of each node of all the nodes of the ad hoc network is transmitted to a SIP registrar in the external network. It must be registered in advance individually. In addition, when a node in the external network wants to communicate with a specific node in the ad hoc network, the proxy server of the external network contacts the SIP Location server to find out the location of the specific node, and the SIP Location server registers the SIP. Notifies the proxy server of the contents registered on the server.

In the case of the SIP registration server according to the RFC 3261 standard document, the SIP registration process is performed as shown in FIGS. 2A to 2C. 2A to 2C are diagrams for describing a general SIP registration process.

That is, in the general SIP registration process, an ad hoc node of a SIP user who wants to register transmits a registration request message (F1) to the SIP registration server 110, and the SIP registration server 110 reviews the validity of the registration request and then registers the registration request message. This is accomplished by sending a response message F2 to the request message F1 to the ad hoc node of the SIP user. 2B is an example of the registration request message F1, and FIG. 2C is an example of the response message F2. This general SIP registration process is done individually for every node in the ad hoc network.

On the other hand, at least one embodiment of the present invention (e.g., the first embodiment and the second embodiment) is different from this and will be described below.

3 is a block diagram illustrating a gateway node according to at least one embodiment of the present invention. The request message generator 310 and the request message transmitter 320 are included in the gateway node. It demonstrates with reference to FIG.

The request message generator 310 generates a registration request message including representative information of nodes belonging to the mobile ad hoc network and address information of the gateway node.

In the present specification, each of the nodes belonging to the mobile ad hoc network is a node performing a SIP-based Voice over Internet Protocol (VoIP) call, and each node is given a phone number for VoIP function and SIR URI (Uniform Resources Identifier) of each node. ) Is represented as the telephone number assigned to the node. On the other hand, the station numbers of telephone numbers assigned to all nodes in the same ad hoc network are the same, and each station has its own station number. The station numbers of the main ad hoc network 120, the sub ad hoc network 130, the sub ad hoc network 132, and the sub ad hoc network 134 are different.

The registration request message according to at least one embodiment of the present invention differs from the registration request message according to the RFC 3261 standard document. Firstly, according to the RFC 3261 standard, the registration request message is individually selected for each node belonging to an ad hoc network. Although the gateway is generated on behalf of the nodes belonging to the ad hoc network according to at least one embodiment of the present invention, and secondly, according to the RFC 3261 standard, a specific node belonging to the ad hoc network (strict Preferably, a 'phone number (all)' of a node making a SIP registration request is included, but according to at least one embodiment of the present invention, 'representative information' of nodes belonging to an ad hoc network is included. Representative information of nodes belonging to an ad hoc network means 'station information' of the nodes. Third, according to the RFC 3261 standard, the contact field in the registration request message includes address information of a specific node (strictly requesting a SIP registration request) belonging to an ad hoc network, but according to at least one embodiment of the present invention. The contact field in the registration request message contains the address information of the gateway node. An IP (Internet Protocol) address is an example of such address information. Fourthly, according to at least one embodiment of the present invention, the registration request message includes information indicating that 'the node that made the SIP registration request belongs to an ad hoc network', but not according to the RFC 3261 standard.

The request message transmitter 320 transmits the generated registration request message to the SIP registration server 110 on behalf of (or instead of) the nodes belonging to the mobile ad hoc network.

Subsequently, when the SIP registration server 110 examines the validity of the registration request and determines that the registration is permitted, the SIP registration server 110 stores the 'gateway node address' indicated in the registration request message, and responds to the registration request message with the gateway node. This completes the SIP registration process.

Meanwhile, the description of FIG. 3 applies not only to the case where the mobile ad hoc network is composed of one single network, but also to the case where the mobile ad hoc network is composed of a plurality of networks as follows. Specifically, the sub gateway node (ie, the ad hoc gateway node) of the sub ad hoc network generates a registration request message including 'representative information (station number information) of nodes belonging to the sub ad hoc network' and 'address information of the sub gateway node'. The generated registration request message is transmitted to the main gateway node (that is, the gateway) belonging to the main ad hoc network, and the gateway updates the registration request message transmitted from the ad hoc gateway node by using the gateway address information, and updates the updated registration request message to the SIP. It transmits to the registration server 110. At this time, the gateway may update the transmitted registration request message by replacing the address information of the ad hoc gateway node with the address information of the gateway among the transmitted registration request messages.

3 will be described in more detail with reference to FIGS. 4A to 7, and each of the first and second embodiments of the present invention will be described. In the present specification, the first embodiment is an embodiment for explaining the unique aspects of the present invention in the SIP registration process for the main ad hoc network 120, the second embodiment is a sub ad hoc network (130, 132, or 134) is an embodiment for explaining the unique matters of the present invention in the SIP registration process. First, the first embodiment will be described.

4A to 4C are diagrams for describing a SIP registration process according to a first embodiment of the present invention. It demonstrates with reference to FIG.

As shown in FIG. 4A, the gateway transmits a registration request message F1 to the SIP registration server 110 on behalf of (or instead of) the nodes belonging to the main ad hoc network 120, and the SIP registration server 110 transmits the registration request message F1 to the SIP registration server 110. After reviewing the validity of the registration request and determining that the registration is permitted, the gateway stores the 'gateway address' shown in the registration request message, and transmits a response message (F2) to the gateway, thereby transmitting the first message of the present invention. The SIP registration process according to the embodiment is completed.

Unlike the registration request message illustrated in FIG. 2B, the registration request message F1 illustrated in FIG. 4B does not include 'all phone numbers of a specific node belonging to the main ad hoc network 120' in the To and From fields. Station number information of the main ad hoc network 120 is included. For example, in entering the phone number in the To and From fields, only the station number can be written down, and the rest of the number can be replaced with the '?' Symbol so that only the station number can be entered in the registration request message. '?' Here means that any number 0-9 is irrelevant.

In addition, unlike the registration request message shown in FIG. 2B, the registration request message F1 shown in FIG. 4B has a user parameter of 'user = adhoc' in the To and From fields, whereby a node having a SIP registration request is ad-hoc. It is a node belonging to a network ', and the contact field includes the IP address of the gateway, not the IP address of the node that made the SIP registration request.

When the SIP registration server 110 grants the registration in response to the registration request message as shown in FIG. 4B, the SIP registration server 110 stores the address of the gateway indicated in the registration request message and is shown in FIG. 4C. Send a response message as shown to the gateway. The difference between the response message shown in FIG. 4C and the response message shown in FIG. 2C is the same as the difference between the registration request message shown in FIG. 4B and the registration request message shown in FIG. 2B.

When the SIP registration process is completed as described above, for example, the phone numbers of all the nodes belonging to the main ad hoc network are '123', and the SIP proxy server requests to establish a session with the phone number '123-4567'. If received, the SIP proxy server requests the SIP Location server for the location information of the SIP URI having the telephone number of '123', and the SIP Location server stores the gateway address stored in the SIP registration server 110 <sip: 192.0.2.1 > Is informed to the SIP proxy server, and the SIP proxy server forwards the session establishment request to the gateway 122. In this case, the gateway 122 determines whether the session establishment request is the main ad hoc network 120. Since the station number '123' is the station number of the main ad hoc network 120, the gateway 122 stores the 'station number' stored in the gateway 122. The session establishment request is forwarded to the address of the gateway of the main ad hoc network 120 matched with 123. Accordingly, the gateway receiving the session establishment request transmits the session establishment request to the final destination (that is, the node corresponding to '123-4567') using the ad hoc routing protocol of the main ad hoc network 120. The final destination thus responds to the session establishment request and the responding message is delivered to the SIP proxy server in the reverse order mentioned above. As a result, a session can be established and a call can be established between a node of an external network that has requested the session setup and a specific node (node corresponding to a '123-4567' phone number) of the main ad hoc network 120.

5A to 5E are diagrams for describing a SIP registration process according to a second embodiment of the present invention. It demonstrates with reference to FIG.

As can be seen in FIG. 5A, the ad hoc gateway node transmits a registration request message F1 to the gateway 122 on behalf of (or on behalf of) the nodes belonging to the server ad hoc network (eg, 132), which gateway 122 receives the registration request message F1. The registration request message (F1) is updated using the address information of the gateway 122, and the updated registration request message (F2) is transmitted to the SIP registration server 110, the SIP registration server 110 is validity of the registration request After reviewing, if it is determined to grant the registration, it stores the 'address of the gateway' shown in the registration request message (F2), transmits a response message (F3) to the gateway (122) for the registration request message (F2), and the gateway (122). ) Updates the response message F3 using the address of the ad hoc gateway node of the sub ad hoc network 132 and updates the updated response message F4 to the ad hoc gateway node of the sub ad hoc network 132. To the network, thereby completing the SIP registration process according to the second embodiment of the present invention.

The registration request message F1 shown in FIG. 5B is different from the registration request message shown in FIG. 5B in that the 'To, From' field does not include 'the entire phone number of a specific node belonging to the sub ad hoc network 132'. Station number information of the ad hoc network 132 '. For example, when entering a phone number in the To and From fields, only the station number is written down, and the remaining numbers can be replaced with the '?' Symbol so that only the station number can be entered in the registration request message. Here, '?' Means that any number 0-9 is irrelevant. As shown in FIG. 5B, the station number of the sub ad hoc network 132 is assumed to be '234'.

In addition, unlike the registration request message shown in FIG. 5B, the registration request message F1 shown in FIG. 5B has a user parameter of 'user = adhoc' in the To and From fields, whereby a node having a SIP registration request is ad-hoc. Node belongs to the network, and the contact field contains the IP address of the ad hoc gateway node, not the IP address of the node that requested the SIP registration. As shown in FIG. 5B, the IP address of the ad hoc gateway node of the sub ad hoc network 132 is assumed to be <192.0.2.4>.

This registration request message F1 is updated by the gateway 122.

That is, the gateway 122 changes the registration request message F1 to the IP address of the gateway 122 while leaving the rest of the registration request message F1 as it is, thereby changing the registration request message F1 to the registration request message F2. Update with). As shown in FIG. 5B, the IP address of the gateway 122 is assumed to be <192.0.2.1>.

At this time, the gateway 122 serves as a local SIP registration server (REGISTRAR) for the sub ad hoc network (132). That is, when the gateway 122 updates the registration request message F1 as described above, the gateway 122 stores the address of the ad hoc gateway node together with the station number information of the sub ad hoc network 132.

When the SIP registration server 110 grants registration in response to the registration request message F2, the SIP registration server 110 stores the 'address of the gateway 122' shown in the registration request message F2 and registers the registration request message. The SIP URI (station number information) shown in (F2) is recognized as if it is the station number of the main ad hoc network and is also stored. At this time, the SIP registration server 110 does not delete or update the previous information if the binding information (that is, the station number information and the address information matched with the station number information) of the gateway 122 exists before, and does not delete or update the previous information. Save all current information. For example, as in the first embodiment, the SIP registration server 110 is binding an address of sip: 192.0.2.1 to a SIP URI of sip: 123-???? @ adhoc-domain.com. When the registration request message F2 shown in FIG. 5C is received while being stored, the SIP registration server 110 receives sip: 123-???? @ adhoc-domain.com and sip: 234-???? You will bind sip: 192.0.2.1 to two SIP URIs named @ adhoc-domain.com and store this binding information.

Thereafter, the SIP registration server 110 transmits a response message F3 as shown in FIG. 5D to the gateway 122.

After receiving the response message F3, the gateway 122 updates the response message F3 using the address of the ad hoc gateway node of the sub-ad hoc network 132, and updates the updated response message F4 to the ad hoc gateway node. To transmit.

When the SIP registration process is completed as described above, for example, the phone numbers of all the nodes belonging to the main ad hoc network 120 are '123', and the phone numbers of all the nodes belonging to the sub ad hoc network 132 are ' 234 ', and later, when the SIP proxy server is requested to establish a session with the telephone number' 234-4567 ', the SIP proxy server provides the location information of the SIP URI having the telephone number whose station number is' 234'. Accordingly, the SIP Location server informs the SIP proxy server of the address <sip: 192.0.2.1> of the gateway 122 stored in the SIP registration server 110, and the SIP proxy server sends the session 122 a request for establishing the session. To pass. In this case, the gateway 122 determines whether the session establishment request is the main ad hoc network 120, but since the station number '234' is not the station number of the main ad hoc network 120, the gateway 122 is stored in the gateway 122. The session establishment request is forwarded to the address of the ad hoc gateway node of the sub ad hoc network 132 matched with the station number 234. Accordingly, the ad hoc gateway node receiving the session establishment request transmits the session establishment request to the final destination (that is, the node corresponding to '234-4567') using the ad hoc routing protocol of the sub ad hoc network 132. The final destination thus responds to the session establishment request and the responding message is delivered to the SIP proxy server in the reverse order mentioned above. As a result, a session can be established and a call can be established between any node of the external network that has requested the session setup and a specific node (node corresponding to the '234-4567' phone number) of the sub ad hoc network 132.

6 is a flowchart showing a registration method according to the first embodiment of the present invention, which will be described with reference to FIG.

The gateway 120 generates a registration request message including representative information (ie, station number information) of the nodes belonging to the main ad hoc network and address information of the gateway (step 610).

After operation 610, the gateway 120 transmits the registration request message generated in operation 610 to the SIP registration server 110 on behalf of the nodes (operation 620).

7 is a flowchart showing a registration method according to a second embodiment of the present invention, which will be described below with reference to FIG.

The ad hoc gateway node generates a registration request message including representative information (ie, station number information) of the nodes belonging to the sub ad hoc network and address information of the ad hoc gateway node (step 710).

After operation 710, the ad hoc gateway node transmits the registration request message generated in operation 710 to the gateway 122 (operation 720).

After operation 720, the gateway 122 updates the registration request message transmitted from operation 720 using the gateway address information (operation 730).

After operation 730, the gateway 122 transmits the registration request message updated in operation 730 to the SIP registration server 110 (operation 740).

The program for executing the registration method according to at least one embodiment of the present invention mentioned above on a computer may be stored in a computer-readable recording medium.

Here, the computer-readable recording medium may be a magnetic storage medium (for example, a ROM, a floppy disk, a hard disk, etc.), and an optical reading medium (for example, a CD-ROM, a DVD). : Digital Versatile Disc).

So far, the present invention has been described with reference to the preferred embodiments. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a diagram illustrating a hierarchical mobile ad hoc network.

2A to 2C are diagrams for explaining a general SIP registration process.

3 is a block diagram illustrating a gateway node according to at least one embodiment of the present invention.

4A to 4C are diagrams for describing a SIP registration process according to a first embodiment of the present invention.

5A to 5E are diagrams for describing a SIP registration process according to a second embodiment of the present invention.

6 is a flowchart showing a registration method according to the first embodiment of the present invention.

7 is a flowchart showing a registration method according to the second embodiment of the present invention.

Claims (14)

In the registration method for registering the SIP (Session Initiation Protocol) to the registration server performed in the ad hoc network and provided outside the ad hoc network, Generating a registration request message including representative information of nodes belonging to the ad hoc network and address information of a gateway node for SIP registration to the registration server belonging to the ad hoc network and provided outside the ad hoc network; And And sending the registration request message to the registration server on behalf of the nodes. The method of claim 1, wherein the representative information is station number information. The method of claim 1, wherein the address information is an Internet Protocol (IP) address. According to claim 1, The registration request message further includes information indicating that each of the nodes belong to an ad hoc network. According to claim 1, The ad hoc network comprises a main ad hoc network connected to an external network of the ad hoc network and one or more sub ad hoc networks connected to the main ad hoc network, The generating and the transmitting step (a) generating the registration request message including representative information of nodes belonging to the sub ad hoc network and address information of the sub gateway node; (b) transmitting the registration request message generated in step (a) to a main gateway node belonging to the main ad hoc network; (c) updating the registration request message transmitted from step (b) using address information of the main gateway node; And (d) transmitting the updated registration request message to the registration server. The method of claim 5, wherein step (c) The registration method characterized in that for updating the registration request message transmitted in the step (b) by replacing the address information of the sub gateway node of the registration request message transmitted in the step (b) with the address information of the main gateway node. . A computer-readable recording medium storing a computer program for executing the method of any one of claims 1 to 6. A gateway node belonging to an ad hoc network and registering a SIP (Session Initiation Protocol) with a registration server provided outside the ad hoc network, A request message generation unit for generating a registration request message including representative information of nodes belonging to the ad hoc network and address information of the gateway node; And And a request message transmitter for transmitting the registration request message to the registration server on behalf of the nodes. The method of claim 8, The representative information is a gateway node, characterized in that the station number information. The method of claim 8, The address information is a gateway node, characterized in that the IP (Internet Protocol) address. The method of claim 8, The registration request message further includes information indicating that each of the nodes belong to an ad hoc network. The method of claim 8, The ad hoc network comprises a main ad hoc network connected to an external network of the ad hoc network and one or more sub ad hoc networks connected to the main ad hoc network, The gateway node is provided for each of the main ad hoc network and the sub ad hoc networks. The method of claim 12, The sub gateway node belonging to the sub ad hoc network Generating the registration request message including the representative information of the nodes belonging to the sub ad hoc network and the address information of the sub gateway node, and transmitting the generated registration request message to the main gateway node belonging to the main ad hoc network; The main gateway node belonging to the main ad hoc network And update the registration request message transmitted from the sub gateway node using address information of the main gateway node, and transmit the updated registration request message to the registration server. The method of claim 13, wherein the main gateway node is And exchange the address information of the sub gateway node in the transmitted registration request message with the address information of the main gateway node to update the transmitted registration request message.

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