KR101799081B1 - Device, method and program using an agent for supporting mobility of collaborative design system - Google Patents

Abstract

The present invention relates to mobility supporting device, method and program of a collaborative design system using an agent. According to an embodiment of the present invention, the mobility supporting device of a collaborative design system using an agent comprises: a communicating unit (11); and a controlling unit (13). The present invention enables a plurality of clients which share a design drawing to modify information on the design drawing in real time.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus, a method, and a program for supporting mobility of a collaborative design system using an agent,

The present invention relates to a mobility support apparatus, a method, and a program for seamlessly providing an Internet connection state to a collaborative design system.

In order to shorten product development time and reduce development costs in a production organization composed of numerous organizations, it is necessary to provide an environment in which design and production information can be exchanged or shared among geographically and spatially separated organizations It is important.

On the other hand, the MLE (Multiple Level Encryption) collaborative design system stores design drawings of a large number of designers as a tree structure and encrypts each node with a different key. In the MLE collaborative design system, a designer can only view the design drawings stored in the nodes and their subnodes that he can access.

The development of network technologies in computers and mobile devices enables sharing of mutually relevant information in real time beyond these limits. However, in order to realize an efficient collaborative design system, it is necessary to provide a continuous internet connection environment for smooth transmission of design data through a network. For this reason, there is a demand for development of an apparatus or method for effectively using a computer and network technology to provide an Internet access environment.

Meanwhile, Korean Patent Registration No. 10-2009-0044093 (hereinafter referred to as "prior art") as a conventional technology related to 'device collaboration method and system' The mobile device automatically restores the connection between the mobile device and the convenience device based on the connection state and the session information through the local area communication network when the mobile device enters the service area without resetting the session information, A mobile device that receives a convenience service; And connection information and session information in a state where the mobile device is connected to the mobile device in a specific zone for providing a convenience service, and if the mobile device is recognized in a specific zone, connection with the mobile device And a device for restoring the device.

However, the prior art has a disadvantage in that it is difficult for general users to freely use it because the size of the program to be modified is large and the modification cost is high by providing the Internet access environment for the user through the middleware which should be modified at the operating system level.

Korea Patent Publication No. 10-2009-0044093

An object of the present invention is to provide a mobility support apparatus, a method, and a program for a collaborative design system that can be utilized without a middleware having a large program size and high modification cost.

In order to achieve the above object, the present invention provides a communication system including a communication unit for receiving a design drawing from a client and connecting the client terminal to a multiple level encryption (MLE) server utilizing a collaborative design system capable of up / ; And a control unit for detecting an IP address change of the communication unit through the MLE (Multi Level Encryption) server, continuously maintaining the Internet environment, and changing an IP address of the communication unit to provide an environment for collaborative design Wherein the controller receives the IP address automatically changed from the MLE (Multi Level Encryption) server without using the middleware by using the agent that detects the change of the IP address, A code supporting mobility is added to a multiple level encryption (MLE) algorithm to provide a seamless Internet access state when the client moves out of the current area and moves to another area.

Preferably, the communication unit is provided in the terminal of the client, and the control unit controls the wireless environment between the terminal and the MLE (Multiple Level Encryption) server through an agent installed using the operating system of the terminal, Can be provided.

Preferably, the control unit may encrypt a file in which the up / downloadable design drawing is stored.

Preferably, the MLE (Multiple Level Encryption) server includes a plurality of sockets to provide an Internet environment in which a plurality of clients can simultaneously access the server.

Preferably, when changing the IP address of the communication unit, the control unit may allocate a tethering service-based IP address provided as a common WiFi or a personal hotspot.

Preferably, the control unit performs an algorithm for supporting mobility installed in the terminal of the client connected to the multi level encryption (MLE) server, and detects a change in the IP address as the agent And convert the parent process, which has been generated and processed by the client, into a signal processor of a multi level encryption (MLE) file of the client.

The control unit may receive the connection request packet from the communication unit and connect the terminal of the client to the new IP address when the change of the IP address of the communication unit is detected.

The present invention includes a communication unit for connecting a terminal of a client to a multi level encryption (MLE) server and a control unit for detecting a change in the IP address of the communication unit and changing the IP address to provide an environment for collaborative design A method for supporting mobility in a collaborative design system, the method comprising: (a) providing a multi-level encryption (SSC) based on a Secure Sockets Layer (SSL) connection as a standard protocol for securely transmitting / Connecting the client terminal to an MLE (Multiple Level Encryption) server; (b) when the client moves to another access area beyond the current access area in an environment where the client and the MLE (Multiple Level Encryption) server are connected by the step (a) Creating an agent in the system of the client, and detecting a change in the IP address of the client without dependence on the middleware; And (c) when the controller detects that the IP address of the client changed in the step (b) is changed, the controller controls the parent code through the agent installed in the terminal of the client to disconnect the existing IP address And an IP address conversion step of creating a new socket for connection with a changed IP address, giving a new IP address to the client, and providing a seamless Internet connection state.

Preferably, the step (b) further comprises performing an algorithm for supporting mobility installed in the terminal of the client connected to the MLE (Multi Level Encryption) server in the step (a) A parent process for generating a child process for detecting a change in address and converting a parent process that has been generated and processes a packet transmitted from the client into a signal processor of a multi level encryption (MLE) file of the client .

Preferably, in the step (c), when the change of the IP address of the communication unit is detected in the step (b), the connection request packet is received from the communication unit and the terminal of the client is connected to a new IP address.

The present invention includes a communication unit for connecting a terminal of a client to a multi level encryption (MLE) server and a control unit for detecting a change in the IP address of the communication unit and changing the IP address to provide an environment for collaborative design A mobility support program for a collaborative design system, the mobility support program comprising: (a) the multi-level encryption based on a Secure Sockets Layer (SSL) connection, which is a standard protocol for securely transmitting data between servers through the communication unit; Connecting the client terminal to an MLE (Multiple Level Encryption) server; (b) when the client moves to another access area beyond the current access area in an environment where the client and the MLE (Multiple Level Encryption) server are connected by the step (a) Creating an agent in the system of the client, and detecting a change in the IP address of the client without dependence on the middleware; And (c) when the controller detects that the IP address of the client changed in the step (b) is changed, the controller controls the parent code through the agent installed in the terminal of the client to disconnect the existing IP address A new socket for connecting to a changed IP address is generated to give a new IP address to the client and an IP address conversion step to provide a seamless Internet access state.

Preferably, the mobility support program performs an mobility support algorithm installed in the terminal of the client connected to the MLE (Multi Level Encryption) server in the step (a) (B) generating a child process for detecting a change and converting a parent process that is generated and processed by the client to a signal processor of a multi level encryption (MLE) file of the client, And (c) receiving the connection request packet from the communication unit and connecting the terminal of the client to the new IP address when the change of the IP address of the communication unit is detected in the step (b). .

According to the present invention, there is provided a communication system including a communication unit for connecting a client to a multi level encryption (MLE) server, a control unit for detecting a change in a client IP address using a user when a user moves, It supports mobility so that clients can participate seamlessly in a collaborative design system in a wireless Internet environment without any separate middleware. Through this, it is advantageous that a large number of clients sharing a design drawing can modify and consult information on a design drawing in real time in order to utilize a collaborative design system.

In addition, according to the present invention, it is possible to utilize a mobility support apparatus, a method, and a program including a control unit that is independent of a middleware, to a collaboration system other than the design field.

1 is a mobility support apparatus of a collaborative design system according to an embodiment of the present invention.
FIG. 2 illustrates an operation process of a mobility support apparatus of a collaborative design system according to an embodiment of the present invention.
3 is a flowchart of a mobility support method of a collaborative design system according to an embodiment of the present invention.
FIG. 4 illustrates a mobility support procedure in a tethering support environment using a personal hotspot according to an exemplary embodiment of the present invention.
5 is a table showing a processing time of a server according to various IP change counts according to an embodiment of the present invention.
6 is a graph illustrating a processing time of a server according to various IP change counts according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the exemplary embodiments. Like reference numerals in the drawings denote members performing substantially the same function.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the purpose and effect of the present invention are not limited by the following description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a schematic diagram of a collaborative design system mobility support apparatus 1 according to an embodiment of the present invention.

Referring to FIG. 1, the collaborative design system mobility support apparatus 1 receives a design drawing from a client and receives a design drawing, and a multi level encryption (MLE) server A communication unit (11) for connecting a client terminal; And a multi-level encryption server (MLE: Multiple Level Encryption), the Internet environment is continuously maintained, and the IP address of the communication unit 11 is changed to provide an environment capable of collaborative design And a control unit 13 for controlling the operation of the apparatus.

In this embodiment, the collaborative design system mobility support apparatus 1 can receive the design drawings from the terminals of a plurality of clients. The collaborative design system mobility support device 1 can protect the client's intellectual property rights by providing an encrypted design drawing to the allowed clients. Meanwhile, a multi level encryption (MLE) server may be included in the control unit 13 to perform a function. Referring again to FIG. 1, the communication unit 11 may be a mobile device including a smart phone, a notebook, or the like possessed by a client or a device provided in the mobile device. The contents related to the communication unit 11 and the control unit 13 will be described in detail with reference to FIG.

FIG. 2 shows an operation process of the cooperative design system mobility support apparatus 1 according to the embodiment of the present invention. Referring to FIG. 2, the MLE Client can perform functions through the communication unit 11. When the client is located in a wireless Internet accessable area, the client network module can make a connection request to a multi level encryption (MLE) server through the communication unit 11. (1) Next, the control unit 13 (2) If the client moves out of the connection area and moves to another connection area, the communication unit 11 detects the change in IP, detects it through the agent (3) to (5)), the controller 13 generates a new socket for applying the changed change, allocates a changed IP address to the socket, and transmits the changed IP address to the client network module (⑥ to ⑦)

The communication unit 11 is provided in the terminal of the client, and the control unit 13 can provide the Internet environment wirelessly between the terminal and the MLE (Multiple Level Encryption) server through the agent installed using the operating system of the terminal have.

In this embodiment, the communication unit 11 may include a mobile device and a terminal capable of providing a wireless Internet environment. The communication unit 11 may be included as a component of the collaborative design system mobility support apparatus 1 with the agent installed using an operating system built in the terminal. The communication unit 11 can detect a change in an IP address generated when a client moves through an installed agent while a client is connected to a MLE (Multiple Level Encryption) server. The communication unit 11 may transmit the change of the detected IP address to the control unit 13 to continuously maintain the connection state of the client and the MLE (Multiple Level Encryption) server.

The control unit 13 receives an automatically changed IP address from a multiple level encryption (MLE) server without dependence on middleware using an agent that detects a change in an IP address, Level Encryption algorithms are added to support mobility to provide a seamless Internet connection if the client moves from one region to another.

In the present embodiment, it can be noted that the control unit 13 performs functions without dependence on the middleware. The control unit 13 can install the agent in the communication unit 11 using the operating system in the communication unit 11. [ The control unit 13 can receive the change of the IP address detected by the agent. The control unit 13 may generate a new socket to convert the received IP address. The control unit 13 can assign the changed IP address to the communication unit 11. [ The controller 13 seamlessly provides an Internet connection environment of a client and a MLE (Multiple Level Encryption) server through the above-described series of processes, thereby enabling a client to participate in a collaborative design system continuously.

The middleware may include software that narrows the differences between various hardware, network protocols, applications, LAN, PC environment, and operating system installed in a company. Middleware can refer to software that enables smooth communication between applications and the operating environment in a complex environment. Conventional centralized computing has rapidly changed to distributed computing due to the emergence of SI (system integration) technique for connecting independent existing heterogeneous systems to one network. Middleware is emerging software that solves many problems in implementing a distributed computing environment. Distributed technologies such as TCP / IP, database access middleware, Distributed Component Object Model (DCOM), and Common Object Request Broker Architecture (CORBA).

The control unit 13 can encrypt the file in which the up / downloadable design drawing is stored.

In this embodiment, the control unit 13 can encrypt the design drawing to be used in the collaborative design system. In detail, the control unit 13 includes a MLE (Multiple Level Encryption) server, and a MLE (Multiple Level Encryption) server encrypts design drawings to provide enhanced security to clients . The control unit 13 can maintain a state in which a client is connected to a multi level encryption (MLE) server so that the encrypted design drawing can be uploaded / downloaded.

A multiple level encryption (MLE) server has a plurality of sockets and can provide an Internet environment in which a plurality of clients can simultaneously access.

2, when a single client's IP address is changed, a multiple level encryption (MLE) server generates a new socket in addition to the existing socket, To a new socket. This process can be continued even when a plurality of clients are connected. Therefore, a multi-level encryption (MLE) server has a plurality of sockets, so that even when a plurality of clients are connected at the same time and the IP address of each client is changed, MLE: Multiple Level Encryption) It is possible to maintain the server's Internet connection status.

When changing the IP address of the communication unit 11, the control unit 13 can assign a tethering service-based IP address provided as a common WiFi or a personal hotspot.

In this embodiment, the control unit 13 can map the IP address provided to the communication unit 11 to all the private networks available at the connection site where the client is located, and assign the mapped IP address to the communication unit 11. [ Any private network that the control unit 13 can search for may include a tethering service provided as a public WiFi, virtual private network, or personal hotspot.

The controller 13 performs an algorithm for supporting mobility installed in the terminal of the client connected to the MLE (Multiple Level Encryption) server to create a child process for detecting a change in the IP address as an agent, The parent process that processes the generated packet transmitted from the client can be converted into the signal processor of the client's MLE (Multiple Level Encryption) file.

In this embodiment, the controller 13 can detect a change in the IP address when the client moves out of the connection area and moves to another connection area. The control unit 13 can create an agent using the fork () system call on the terminal of the client. The control unit 13 can observe the change of the IP address and control the parent code by using the agent. At this time, the signal handler of the parent code can reconnect the MLE (Multiple Level Encryption) server with the new IP address and replace the socket number with the new connection. The control unit 13 can return to the program in which the parent process has generated the signal and continue the previous work.

When the control unit 13 detects a change in the IP address of the communication unit 11, the control unit 13 receives the connection request packet from the communication unit 11 and connects the client terminal to the new IP address.

In this embodiment, when receiving the signal sent by the agent, the controller 13 may jump to the reconn () function to terminate the current connection and establish a new connection with the MLE (Multiple Level Encryption) server. The control unit 13 may store a new socket variable in the cliSocket. The reconn () function that is executed at this time can transmit the existing session number to the MLE (Multiple Level Encryption) server together with the MLE (Multiple Level Encryption) command to properly process the IP change.

Meanwhile, the controller 13 may modify the MLE (Multiple Level Encryption) server to support IP mobility. The control unit 13 can receive the message for IP address translation from the client, extract the previous session number, retrieve the previous context information of the client, and deliver it to the new session.

3 is a flowchart of a mobility support method of a collaborative design system according to an embodiment of the present invention. 3, a communication unit 11 for connecting a terminal of a client to a multi level encryption (MLE) server, and a communication unit 11 for detecting a change in an IP address and changing an IP address, The method for supporting mobility in a collaborative design system having a control unit 13 for providing an environment includes a step S1 of connecting to an MLE server, a step S3 of detecting a change in an IP address, (C) step (S5) of providing the first image data.

(a) Step S1 is a step S11 of performing a multi-level encryption (MLE) based on a Secure Sockets Layer (SSL) connection, which is a standard protocol for securely transmitting and receiving data between servers via the communication unit 11, Multiple Level Encryption) server.

In this embodiment, (a) step (S1) may be performed through linkage between the communication unit 11 and the control unit 13. [ (a) Step (S1) can input information of an IP address available in a socket for connection between an initial client and a MLE (Multiple Level Encryption) server. (a) In step S1, the control unit 13 transmits the information of the IP address input to the socket to the communication unit 11 so that the terminal of the client can access the MLE (Multiple Level Encryption) server have. (a) In step S1, an SSL port is opened through the control unit 13, and a MLE (Multiple Level Encryption) server can continue processing the client packet. A Multiple Level Encryption (MLE) server has to deal with multiple clients, where (a) step (S1) can wait for packets from multiple clients simultaneously using a "select" system call. (a) In step S1, when a packet arrives from a plurality of clients, three methods can be processed. (a) Step (S1) can call the "accept" function to make a new connection when a SYN packet, which is a packet requesting connection from the client, arrives. Also, (a) step (S1) may initiate the SSL protocol to establish an SSL connection upon arrival of an SSL clientHello packet. Finally, when a client command packet arriving over the SSL channel arrives, (a) the step (S1) decrypts the encrypted packet through the control unit 13 and can execute appropriate processing according to each command. For example, (a) step (S1) can execute a command such as opening a design file, reading a part of a file, writing data to a file, or the like.

(b) In step S3, if the client moves from the current access area to another access area in an environment where a client and a MLE (Multiple Level Encryption) server are connected by step S1, The server 13 can create an agent in the system of the communication unit 11 to detect a change in the IP address of the client without relying on the middleware.

In this embodiment, if the client moves to another area beyond the current access area, step (b) may detect the change of the IP address by the agent installed in the terminal of the client and transmit the detected change to the controller 13. Agents can be lightweight and simple enough to be executed without dependence on middleware. Also, the agent may be easy for the general user to access and may not require a high cost to modify the agent.

(b) Step (S3) performs an algorithm for supporting mobility installed in a terminal of a client connected to a multiple level encryption (MLE) server in step (a) And converts the parent process, which processes an existing packet generated from the client, into a signal processor of a client's MLE (Multiple Level Encryption) file.

In the present embodiment, step (b) S3 may detect a change in the IP address when the client moves out of the connection area and moves to another connection area through the control part 13. (b) Step (S3) may generate an agent using the fork () system call to the terminal of the client. (b) Step (S3) can use the agent to observe the change of the IP address and to control the parent code. At this time, the signal handler of the parent code can reconnect the MLE (Multiple Level Encryption) server with the new IP address and replace the socket number with the new connection. (b) Step (S3) may allow the parent process to return to the program in which the signal occurred and continue the previous work.

(c) In step S5, when the controller 13 detects that the changed IP address of the changed client is changed in step (b), the controller 13 controls the parent code through the agent installed in the terminal of the client Thereby disconnecting the existing IP address and creating a new socket to connect to the changed IP address, thereby giving a new IP address to the client and providing a seamless Internet access state.

In this embodiment, (c) step S5 may control the parent code through the agent and cause the parent code to process the signal. (c) Step S5 may execute a function to terminate the currently connected connection, and then execute a function to establish a connection with the new server. (c) In step S5, information of a server to be newly connected is stored in a new socket, and the stored information can be transmitted to the server through a command.

(c) In step S5, if it detects a change of the IP address of the communication unit 11 in step (S3), it receives a connection request packet from the communication unit 11 and connects the client terminal to the new IP address .

In the present embodiment, (c) step S5, when receiving the signal sent by the agent through the control unit 13, jumps to the reconn () function to terminate the current connection and send a new level encryption (MLE) You can establish a connection. (c) Step S5 may store a new socket variable in the cliSocket. The reconn () function that is executed at this time can transmit the existing session number to the MLE (Multiple Level Encryption) server together with the MLE (Multiple Level Encryption) command to properly process the IP change.

Meanwhile, (c) step S5 may modify a multiple level encryption (MLE) server to support IP mobility. (c) In step S5, a message for IP address translation is received from the client, the previous session number is extracted, and the previous context information of the client is retrieved and transmitted to the new session.

In the embodiment of the present invention, a communication unit 11 for connecting a terminal of a client to a multi level encryption (MLE) server and a communication unit 11 for detecting a change in an IP address and changing an IP address, A secure socket layer (SSL: Secure), which is a standard protocol for securely transmitting and receiving data between servers via the communication unit 11, in a mobility support program of a collaborative design system having a control unit (A) connecting a client terminal to a MLE (Multiple Level Encryption) server based on a Sockets Layer (Sockets) connection; (a) If the client moves to another access area beyond the current access area in an environment where a client and a multiple level encryption (MLE) server are connected in step S1, the controller 13 controls the communication unit 11, (B) detecting an IP address change of the client without relying on middleware by creating an agent in the system of step (b); The control unit 13 controls the parent code through the agent installed in the terminal of the client so as to connect to the existing IP address in step S6, (C) a step (S5) of converting an IP address to generate a new socket for connecting to a changed IP address, giving a new IP address to the client, and providing a seamless Internet access state, Is corresponding to each step of the mobility support method of the collaborative design system, and redundant description will be omitted.

Also, the mobility support program (a) performs an algorithm for supporting mobility installed in a terminal of a client connected to a multi level encryption (MLE) server in step S1, and detects a change in the IP address as an agent (B) converting (S3) a parent process for generating a child process and processing an existing packet generated from the client to a signal processor of a client's MLE (Multiple Level Encryption) file, and b) When the change of the IP address of the communication unit 11 is detected in step S3, the connection request packet is received from the communication unit 11 and the client terminal is connected to the new IP address. Can be stored on the medium to let you know.

Hereinafter, an embodiment for mobility support of a collaborative design system will be described.

< Example 1 > Individual Hotspot  Used Tethering  Providing environment

In the present embodiment, it is assumed that, in an office where a fixed IP address is provided, the client's notebook is connected to a multiple level encryption (MLE) server. The client leaves the specified office with the laptop and has the IP address from the tethering service provided in the new access area. To perform a series of processes, the client's mobile device may include a device with a Windows Mobile 6.5 device, iOS 4.2.5 version or later, or an Android version 2.2 or later.

< Example 1  Results>

FIG. 4 illustrates a mobility support procedure in a tethering support environment using a personal hotspot according to an exemplary embodiment of the present invention.

Referring to FIG. 4 (a), the client is connected to a multiple level encryption (MLE) server through IP address 61.99.28.189 and port number 23683. While the client remains connected to a multiple level encryption (MLE) server, an agent process can be created on the client's laptop to constantly observe whether the IP address changes. Referring to FIG. 4B, as soon as the notebook leaves the office and enters the assignable area of the IP address provided in the tethering of the mobile phone, the agent detects the IP change and sends a signal to the parent code. The new assignable IP address is 192.168.43.52, and the port number is 48259. At this time, the control unit 13 creates a new socket capable of storing the corresponding information. When a change in the IP address is received, the Multiple Level Encryption (MLE) server initiates a process to process it. After that, the MLE server allocates a new IP address to the client's notebook, and maintains the connected state in which the IP address is changed as shown in (c) of FIG. 9, and starts normal communication with the new IP address.

< Example 2 > Simultaneous translation of multiple client IP addresses

In this embodiment, an embodiment for verifying the IP change of a plurality of clients will be described. To check the connection status of the client and the MLE (Multiple Level Encryption) server, ping (0), ping (1), ping (2) ) ,,,, ping (n). When a normal connection is maintained, a Multiple Level Encryption (MLE) server sends pong (0), pong (1), pong (2) ,,, pong (n) messages to the client's terminal.

< Example 2  Results>

5 is a table showing a processing time of a server according to various IP change counts according to an embodiment of the present invention.

초 수준임을 확인할 수 있다. 이를 통해, IP 주소가 변경되지 않는 상태에서 ping 메시지에 대한 pong 응답이 서버에 많은 오버헤드를 부과하지 않는다는 것을 확인할 수 있다. 6 is a graph illustrating a processing time of a server according to various IP change counts according to an embodiment of the present invention. Referring to FIGS. 5-6, a client sends 1000 ping messages for 1000 seconds, each message containing an argument from 0 to 999. In the first experiment, the embodiment was implemented without changing the IP address. Even if the client increased from 50 to 200,

Sec. &Lt; / RTI &gt; This confirms that the pong response to the ping message does not place much overhead on the server without changing the IP address.

Referring to FIG. 5, columns 2 and 3 and FIG. 6, it can be seen that the processing time increases as the number of IP changes increases. In summary, it can be seen that the amount of computation required by the server linearly increases as the number of connected clients and the number of IP address fluctuations increase.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. will be. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by all changes or modifications derived from the scope of the appended claims and equivalents of the following claims.

1: Collaborative design system mobility support device
11:
13:
S1: Step (a)
S3: Step (b)
S5: Step (c)

Claims (12)

A MLE (Multiple Level Encryption) server including a control unit and receiving a design drawing from a client including a communication unit and utilizing a collaborative design system capable of up / downloading the design drawing,
Wherein,
Connecting the client to the server,
An agent is created in the client's system to detect a change in the IP address of the client without dependence on the middleware when the client moves to another access area beyond the current access area,
When a change in the IP address of the client is detected, a new socket is created for disconnecting the existing IP address and accessing the changed IP address by controlling the parent code using the agent generated by the client, (MLE) server of a collaborative design system, wherein the IP address is provided to provide a seamless Internet connection state.
delete The method according to claim 1,
Wherein,
(MLE) server of a collaborative design system that encrypts a file in which the design / drawings that can be uploaded / downloaded are stored.
The method according to claim 1,
(MLE) server of a collaborative design system having a plurality of sockets to provide an Internet environment in which a plurality of clients can access at the same time.
The method according to claim 1,
Wherein,
And an IP address based on a tethering service provided as a common WiFi or a personal hotspot when the IP address of the communication unit is changed is allocated to the MLE (Multi Level Encryption) server of the collaborative design system.
The method according to claim 1,
Wherein,
An algorithm for supporting mobility installed in the client connected to the multi level encryption (MLE) server is generated to generate a child process for detecting a change in an IP address as the agent, Wherein the parent process for processing a packet transmitted from the client is converted into a signal processor of a MLE (Multiple Level Encryption) file of the client.
The method according to claim 1,
Wherein,
And upon receiving a connection request packet from the communication unit when the change of the IP address of the communication unit is detected, connects the client to a new IP address.
A communication unit for connecting a client with a multi level encryption (MLE) server, and a control unit for detecting a change in the IP address of the communication unit and providing an environment for collaborative design by changing the IP address In a mobility support method,
(a) the control unit transmits the data to the MLE (Multiple Level Encryption) server based on a Secure Sockets Layer (SSL) connection, which is a standard protocol for securely transmitting and receiving data between servers through the communication unit. ;
(b) when the client moves to another access area beyond the current access area in an environment where the client and the MLE (Multiple Level Encryption) server are connected by the step (a) Creating an agent in the system of the client, and detecting a change in the IP address of the client without dependence on the middleware; And
(c) if the controller detects that the IP address of the client changed in the step (b) is changed, the controller controls the parent code through the agent installed in the client to disconnect the existing IP address, Address creating step of creating a new socket for access to the address, and assigning a new IP address to the client and providing a seamless Internet access state.
9. The method of claim 8,
The step (b)
The method comprising: performing an algorithm for supporting mobility installed in the client connected to the multi-level encryption (MLE) server in step (a), generating a child process for detecting a change in an IP address as the agent, Wherein the parent process for processing a packet that has been generated and transmitted from the client is converted into a signal processor of a multi level encryption (MLE) file of the client.
9. The method of claim 8,
The step (c)
Wherein if the change of the IP address of the communication unit is detected in the step (b), the connection request packet is received from the communication unit and the client is connected to a new IP address.
A communication unit for connecting a client with a multi level encryption (MLE) server, and a control unit for detecting a change in the IP address of the communication unit and providing an environment for collaborative design by changing the IP address In a mobility support program,
(a) the control unit transmits the data to the MLE (Multiple Level Encryption) server based on a Secure Sockets Layer (SSL) connection, which is a standard protocol for securely transmitting and receiving data between servers through the communication unit. ;
(b) when the client moves to another access area beyond the current access area in an environment where the client and the MLE (Multiple Level Encryption) server are connected by the step (a) Creating an agent in the system of the client, and detecting a change in the IP address of the client without dependence on the middleware; And
(c) if the controller detects that the IP address of the client changed in the step (b) is changed, the controller controls the parent code through the agent installed in the client to disconnect the existing IP address, Address of the IP address to provide a new IP address to the client, and to provide a seamless Internet connection state. The mobility support program of the collaborative design system is stored in the medium.
12. The method of claim 11,
The step (b)
The method comprising: performing an algorithm for supporting mobility installed in the client connected to the multi-level encryption (MLE) server in step (a), generating a child process for detecting a change in an IP address as the agent, Converting a parent process, which is generated and processed by the client, into a signal processor of a multi level encryption (MLE) file of the client,
The step (c)
Wherein when the change of the IP address of the communication unit is detected in the step (b), the connection request packet is received from the communication unit and the client is connected to a new IP address.

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