KR20080044592A - Smart packet integration platform for supporting community computing between middleware and network components in ubiquitous networks - Google Patents

Abstract

A smart packet integration platform for supporting interworking between middleware and network components in ubiquitous networks is provided to integrate easily a middleware and network components by performing an interworking operation. A smart packet integration platform design method includes a process for generating and executing a smart packet in order to perform an interworking process between an application service server and network components. The method includes a process for composing a common network interface module for an interworking operation with the network components in a smart packet integration platform.

Description

SMART PACKET INTEGRATION PLATFORM FOR SUPPORTING COMMUNITY COMPUTING BETWEEN MIDDLEWARE AND NETWORK COMPONENTS IN UBIQUITOUS NETWORKS}

1 is a view showing a basic structure for the present invention,

2 is a diagram showing the overall structure of a smart packet integration platform,

3 is a diagram illustrating an internal interface and an external interface structure of a smart packet integration platform for supporting interworking between middleware and network components;

4 is a diagram illustrating an interworking procedure between an application service server and a network component by applying a smart packet integration platform.

The present invention relates to a smart packet integration platform that can effectively support various application services and network management functions required by a mobile node in a ubiquitous network environment using smart packets.

In the past few years, the Internet has developed rapidly, and various packet technologies have been developed to provide an optimal network environment for Internet users. These packet technologies include active packets, cognitive packets, and mobile codes used in active routers that can operate intelligently.

Active packets were extensively studied by the Defense Advanced Research Projects Agency (DARPA) in the mid-1990s with the aim of proposing future network system evolution. The main focus of active packets is to add intelligent elements to existing passive routers, giving them more computing power than traditional routers so that network nodes can operate intelligently. Active routers with exceptionally powerful computing capabilities enable administrators to effectively manage and monitor the network. The active packet can load program code and data applicable to the active router, and execute the program code through a virtual machine loaded in the active router.

Cognitive packets enable intelligent packet technology to control routing and packet flow. Cognitive packet stores learned network information through each node with learning algorithm code loaded in cognitive map in cognitive packet and sends the learned information to source by using ACK packet after arriving at destination. At this time, the ACK packet moving to the source updates the network information learned by the cognitive packet in a mailbox existing in the router. The learning algorithm of the Cognitive packet and the ACK packet use a separate virtual machine to update the information in the router's mailbox, and the source determines the optimal transmission route based on the network information learned through the ACK packet. Load data to be sent in the dumb packet and send it to the destination.

Mobile code includes programming languages as a technology using existing code mobility to solve extended configurability, scalability, and customizability in middleware. Code mobility is suitable for application in distributed systems because not only data or code is moved, but also the status information of various network resources and network status information after program code is executed in a node. Mobile code is developed using various program languages such as agent Tcl, Java, Facile, Obliq, Safe-Tcl, and there are various kinds of virtual machines to execute mobile codes developed using these languages. Four methods are used to apply mobile code in network environment. There is a first client-server model, a second code on demand model, a third remote evaluation model, and a fourth mobile agent model. By applying this model, the network environment is operated more actively than the existing passive network environment.

By applying the above-mentioned method, it is possible to provide various application services and network management functions to mobile nodes, but it provides effective application services according to user's situation in ubiquitous environment that provides various application services based on situation recognition information. This requires flexible interworking between middleware that provides application services and network components that provide network services.

As a result, the conventional methods are not effective in ubiquitous networks in which various network environments and situations exist because they provide services without interworking between middleware and network components. Therefore, in order to effectively provide services required by users in a ubiquitous network environment, a flexible interworking method between middleware and network components is required.

The present invention has been made to solve the above problems, in the ubiquitous network environment network components for providing middleware and network services that provide application services to effectively provide application services to users based on contextual awareness information. To provide a flexible interworking method

The present invention defines a smart packet integration platform and interface that flexibly provides interoperability between middleware and network components in a ubiquitous network environment. In the ubiquitous network environment, middleware recognizes the user's situation and delivers the application service that the user needs through the application service server. Therefore, the mobile node of the user must always know the location of the application service server in order to receive the application service and must be able to find the address of the application service server as needed. In addition, the platform core module must be installed to execute the application service provided by the middleware. If the mobile node does not know the address of the application service server or the platform core module is not installed, the required application service cannot be delivered and cannot be executed. However, the middleware cannot recognize that a mobile node that participates in a service domain does not know the address of an application service server and does not know whether a platform core module is installed in the mobile node. Therefore, there is a need for a method for informing a mobile node in this situation of an application service server address and installing a platform core module. In addition, ubiquitous network environment coexists with various types of network environments, and each network environment uses a different protocol for communication. Therefore, if there is no protocol for communication in the service domain where the user is located, smooth communication cannot be achieved. In order to support the QoS desired by the user, various information sharing for QoS support such as memory, power, and computing power of each node is required. In order to effectively support this need, the present invention defines an internal interface and an external interface of the smart packet integration platform. By applying this interface, users can effectively receive various application services provided in the ubiquitous network environment.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the configuration and operation of the present invention. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even if shown in different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is an overall structural diagram of the present invention. In the ubiquitous network environment, there are various service domains 101 and 102 such as hospitals, department stores, airports, terminal schools, etc., and various application services to be provided to users for each service domain. When the mobile node 104 moves to the area of the service domain 1 (101), the zone master node 103 of the service domain 1 (101) recognizes the mobile node (104) and requires the network service module in the service domain 1 (101). Is delivered via smart packet. The delivered network service module is automatically executed at the mobile node 104 to enable communication with other users 107. In addition, by providing the application service required by the middleware terminal that recognizes the context information of the mobile node 104 to the mobile node 104, the user can use the required application service anytime and anywhere. In the present invention, in order to effectively manage the network in the ubiquitous network environment and to facilitate the use of the user's application service, the smart packet integration platform 306 in the zone master node 103, the mobile node 104, and the application service server 501 in advance. It is assumed that this is installed.

2 is a structure diagram of a smart packet integration platform. The smart packet integration platform is largely divided into middleware and interface components 201 and 203 with network components, smart packet receiver 202 and transmitter 207, smart packet classifier 204 and generator 206. The operation of the smart packet integration platform may be classified into an operation of transmitting a smart packet and an operation of receiving a smart packet. Smart packet generation and transmission starts when there is a request from the network components 301-304 present in the mobile node 104, the application service server 501, or the zone master node 103. After determining the smart packet type according to the request, the smart packet integration platform generates a smart packet by distinguishing whether it is a smart packet for information delivery or a smart packet for execution module delivery. In the case of the smart packet for information transmission, it is generated to deliver network information required by network components, address information of an application service server, smart packet execution error, retransmission request, and ACK. In the case of execution module delivery, a network service module required by a mobile node and a platform core 505 module necessary for executing an application service module are generated to deliver. The generated smart packet is sent to a destination node that needs information or needs a module. The transmitted smart packet is automatically executed in the smart packet consolidation platform of the received node. In the case of an execution module, the module is automatically executed to make the services required by the user available, and in the case of the information type, it is delivered to the necessary network components.

3 is a diagram illustrating the inside of a smart packet integration platform for supporting interworking between the application service server 501 of the middleware, the network components 301 to 304 and the smart packet integration platform 306 in the zone master node 104. 307 and external interface 308 and 309 are structural diagrams. The internal interface N 307 is an interface for interworking between the network components 301-304 and the smart packet aggregation platform 306 so that the mobile node 104 can optimally provide the necessary network services according to the network situation. This interface is used to request network service module or network status information required to be available. Requests of the respective network components 301-304 are delivered to the smart packet aggregation platform 306 via the N interface 307, and generate the required smart packets to the destination upon request. The external interface T 309 between the application service server 501 and the zone master 103 is used to periodically update the address of the application service server 501. In order for the mobile node 104 to receive and use the required application service from the application service server 501, the mobile node 104 needs to know the address of the application service server 501 and the platform core 505 must be installed. In order to inform the user who does not have this information of the application service server 501 so that the mobile node 104 can find the application service server 501, the zone master 103 periodically requests the application service server 501 from the application service server 501. The address is received and stored through the T interface 309. The interface R 308 between the zone master node 103 and the mobile node 104 is used to convey network service modules, network information, smart packet request information, and the like.

4 is a structural diagram of the internal 307, external interfaces 308, 401 of the smart packet aggregation platform 306 of the mobile node. The inner interface N 307 is the same as described in FIG. 3, and the outer interface S 401 is an interface between the application service server 501 and the mobile node 104. The mobile node is the platform core from the application service server 501. It is an interface used to receive 505.

5 is an overall interface structure diagram of the smart packet integration platform 306 pre-installed in the zone master node 103, the mobile node 104, and the application service server 501, respectively, using the interface of the smart packet integration platform 306. The components of can be organically interoperable.

6 is an interworking scenario using the smart packet aggregation platform 306. The application service server 501 periodically transmits its address information to the zone master node 103 through the interface T 309. The address information to be delivered is loaded in a smart packet of the information type. When the zone master node 103 receives the smart packet, it checks the address information loaded in the smart packet payload and updates the old address information of the application service server 501 stored in its DB 310 with the new address information. . After the normal update, the application service server 501 is informed that the address has been normally processed using the smart packet of the ACK type through the interface T 309. Thereafter, when the mobile node 104 without the platform core 505 is moved into the service domain 101, the mobile node 104 is recognized by the network components 301 to 304 of the zone master node 103 to recognize the smart packet integration platform ( 306 informs the address information of the new mobile node 104 via the internal interface N 307 and requests the service domain 1 101 to deliver the necessary network service module to the new mobile node 104. At the request of the network components 301-304, the smart packet consolidation platform 306 generates smart packets of the execution module type and transmits them to the mobile node 104 via the interface R 308. The smart packet consolidation platform 306 of the mobile node 104 received the execution module automatically executes the execution module loaded in the smart packet so that the user can use the necessary network service. When the execution module is executed normally, the smart packet consolidation platform 306 of the mobile node forwards the smart packet of ACK type to the zone master 103 via the interface R 308. In addition, when the mobile node wants to receive the required application service from the application service server 501, but does not know the address of the application service server 501, the mobile node receives the address information of the application service server 501 from the zone master node 103 Request via interface R 308). When the zone master node 103 receives the address request information, it generates the smart packet of the information type and transmits the address information of the application service server 501 stored in its module DB 310 to the mobile node 104. After receiving the address information in the smart packet consolidation platform 306 of the mobile node, the platform core 505 request is transmitted through the smart packet through the external interface S 401. After receiving the request information from the smart packet interface 502 of the application service server 501, the necessary platform core 505 is loaded into the smart packet and transmitted to the mobile node 104. The platform core 505 receives the loaded smart packet in the smart packet consolidation platform 306 of the mobile node and automatically executes it to support the application service required by the user. When the platform core 505 is normally installed, the smart packet of the ACK type is transmitted to the smart packet interface 502 of the application service server 501.

The effects of the present invention described above are as follows.

First, by applying the smart packet integration platform to the zone-based ubiquitous network environment, it is possible to integrate the separated middleware and network components as needed by enabling organic interworking between the middleware and the network components. This makes it possible to provide various application services needed by users in the ubiquitous network to users more stably by utilizing the situation recognition information recognized by the network situation and middleware stage.

Second, the platform core module can be provided at any time by providing the platform core module to the mobile node that does not have the platform core module pre-installed. Can be.

Third, in order to provide a QoS capable network service to a user in a ubiquitous network environment, a variety of information such as network conditions, computing power, power, and memory of each node are required. The smart packet integration platform can effectively provide the state information of each node by using the smart packet in response to a request of a network component that needs this information, thereby enabling effective network management.

Claims (3)

Smart packet integration platform design method to generate and execute smart packet for interworking between application service server and network component The method of claim 1, Common Network Interface Module Configuration for Interworking with Network Components in Smart Packet Integration Platform The method of claim 2, Common Service Interface Module for Interworking with Application Service Server of Middleware in Smart Packet Integration Platform

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