KR101378350B1 - Device and method to dynamically migrate service components - Google Patents

Abstract

The present invention relates to an apparatus and method for dynamic migration of service components. An apparatus for dynamically migrating a component installed in a server to provide a service to a plurality of mobile devices, the apparatus comprising: a monitoring unit for monitoring a quality of the service provided from the server to the plurality of mobile devices; A quality information receiver configured to receive mobile device quality information of each of the plurality of mobile devices when the quality of the service is less than or equal to a preset threshold as a result of the monitoring; A selecting unit selecting at least one mobile device for migrating the component among the plurality of mobile devices using the mobile device quality information; And a component migration unit for migrating the component to the selected mobile device. According to the present invention, a mobile device having migrated a component by migrating a component for providing a service installed in a server to a specific mobile device has its own performance by using the service information by executing the component itself. There is an advantage to be improved. In addition, since the server does not receive a service provision request from the mobile device migrated to the component, the overall performance of the server is improved, it is possible to provide improved quality of service to other mobile devices.

Description

DEVICE AND METHOD TO DYNAMICALLY MIGRATE SERVICE COMPONENTS}

Embodiments of the present invention relate to an apparatus and a method for dynamically migrating a service component, and more particularly, to monitor a quality of a service provided by a server, and to install a component installed in a server to provide a service to a mobile device when the service quality is degraded. An apparatus and method for dynamic migration.

Recently, the use of mobile devices such as iPhones and Android devices is in full swing. A mobile device basically provides a phone function as a mobile phone, as well as a computer function to install and operate various software applications.

Thus, mobile devices are not only used for personal computing, but also as client terminals in enterprise enterprise applications. In addition, the mobile device provides mobility and provides a function of recognizing the surrounding situation such as positioning and acceleration measurement, thereby enabling various application development and application.

However, mobile devices have limitations in terms of resources such as computing power, memory, screen size, and battery life due to their physical size.

Therefore, in the case of a standalone mobile application in which all functions required by a user are installed and executed on a mobile device, execution speed may be reduced or normal execution may not occur due to limited resources of the mobile device.

In order to solve this problem, "Architecture of Android-based Mobile Service Application" is published in Service Information-based Moblie Application (SMA). .

The service-based mobile application distributes some of the possibilities required by the user to the server side and executes the full functions through the network interaction with the client application installed on the mobile device.

For example, simple functions that require relatively few resources among all application functions are executed on the client side, and functions that require complex computation and data manipulation are executed on the server side.

In other words, by using a service provided by a high-performance server, the problem of insufficient resources, which is a disadvantage of the mobile device, is solved, and a complex function application can be used in the mobile device.

However, there are problems that the service execution request from the various mobile devices to the server is excessive, the network bandwidth is reduced, or the reliability is decreased due to a defect that the service has.

In order to solve the problems of the prior art as described above, the present invention monitors the quality of the service provided by the server and an apparatus and method for dynamically migrating components installed in the server to the mobile device to provide a service when the service quality is reduced I would like to propose.

Other objects of the invention will be apparent to those skilled in the art from the following examples.

According to a preferred embodiment of the present invention for achieving the above object, in the dynamic migration device of a component installed in a server for providing a service to a plurality of mobile devices, the server provided to the plurality of mobile devices A monitoring unit for monitoring a quality of service; A quality information receiver configured to receive mobile device quality information of each of the plurality of mobile devices when the quality of the service is less than or equal to a preset threshold as a result of the monitoring; A selecting unit selecting at least one mobile device for migrating the component among the plurality of mobile devices using the mobile device quality information; And a component migration unit for migrating the component to the selected mobile device.

The monitoring unit may monitor the quality of the service using at least one of the number of mobile devices connectable to the server and the number of mobile devices requesting service from the server.

The quality information of the mobile device may include at least one of CPU usage, memory usage, network bandwidth, battery amount, and the number of applications running on the mobile device.

The selecting unit selects one or more candidate mobile devices from among the plurality of mobile devices using mobile device quality information of each of the plurality of mobile devices, and selects one of the candidate mobile devices by using a network state between the candidate mobile device and the server. At least one mobile device for migrating the component may be selected.

The network state may include at least one of a distance between the server and the candidate mobile device, an amount of network traffic transmitted and received between the server and the candidate mobile device, and a network signal strength transmitted and received between the server and the candidate mobile device.

The storage device may further include a storage configured to store the migrateable component having a form compatible with the operating system in response to the type of operating system used in the mobile device.

The component migration unit may identify an operating system of the selected mobile device, select a component corresponding to the operating system, and transmit the selected component to the selected mobile device.

The selected mobile device automatically installs a component transmitted from the component migration unit, and transmits the installation completion information to an operating system of the selected mobile device, and the operating system selects the installation completion information using the service. To an application installed on a mobile device.

According to another embodiment of the present invention, a method for dynamically migrating a component installed in a server to provide a service to a plurality of mobile devices, the method comprising: monitoring the quality of the service provided from the server to the plurality of mobile devices ; Receiving mobile device quality information of each of the plurality of mobile devices when the quality of the service is less than or equal to a preset threshold as a result of the monitoring; Selecting at least one mobile device for migrating the component from among the plurality of mobile devices using the mobile device quality information; And migrating the component to the selected mobile device.

According to the present invention, a mobile device having migrated a component by migrating a component for providing a service installed in a server to a specific mobile device has its own performance by using the service information by executing the component itself. There is an advantage to be improved.

In addition, since the server does not receive a service provision request from the mobile device migrated to the component, the overall performance of the server is improved, it is possible to provide improved quality of service to other mobile devices.

1 is a view for schematically explaining a dynamic migration system according to an embodiment of the present invention.
2 is a diagram showing a detailed configuration of a dynamic migration device according to an embodiment of the present invention.
3 is a diagram illustrating an example of a structure of a component according to an embodiment of the present invention.
4 is a flowchart illustrating the overall flow of the dynamic migration method according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating an example of an architecture for dynamic migration when a mobile device uses Android as an operating system according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for schematically explaining a dynamic migration system according to an embodiment of the present invention.

The dynamic migration system can include a server 100, a mobile device 102, and a dynamic migration device 104.

In the service-based application, some of the functions required by the user are installed in the server 100, and some are installed in the mobile device 102. That is, a simple function that requires relatively few resources among all the application functions is executed in the mobile device 102, and a function requiring complicated calculation and data manipulation is executed in the server 102 side.

Therefore, by receiving the service provided by the server 100 in the mobile device 102 via the network, it is possible to perform a complex application.

However, when the performance of the server 100 decreases due to an increase in the number of mobile devices 102 requesting service to the server 100 or a decrease in the network bandwidth of the server 100, the server 100 supplies the server 100. It may be difficult to perform normal application in the mobile device 102 that executes the application using the service.

Therefore, the dynamic migration apparatus 104 according to the present invention monitors the quality of the service provided from the server 100 to the plurality of mobile devices 102, and when the quality of the service is less than or equal to a preset threshold value, the plurality of mobile devices 102. Select at least one or more mobile devices of the mobile devices. Subsequently, the components installed in the server 100 to migrate the service are migrated to the selected mobile device.

Accordingly, the mobile device 102 having migrated the component executes the component by itself and uses the service information, thereby improving the performance of the application running on the mobile device 102.

In addition, since the server 100 does not receive a service provision request from the mobile device 102 that has migrated the component, the overall performance is improved, and thus the service quality of the server 100 may be provided to other mobile devices 102.

Hereinafter, with reference to FIG. 2, the configuration of the dynamic migration device 104 according to the present invention will be described in detail.

2 is a diagram showing a detailed configuration of a dynamic migration device according to an embodiment of the present invention.

As shown in FIG. 2, the dynamic migration device 104 includes a control unit 201, a monitoring unit 203, a quality information receiving unit 205, a selecting unit 207, a migration unit 209, and a storage unit 211. It may include.

The control unit 201 generally controls the operation of the components of the dynamic migration device 104.

The monitoring unit 203 monitors the quality of the service provided from the server 100 to the plurality of mobile devices 102 every predetermined time or in real time.

In more detail, the monitoring unit 203 uses the at least one of the number of mobile devices 102 connectable to the server 100 and the number of mobile devices 102 requesting service from the server 100 to determine the service. Monitor quality.

According to an embodiment of the present invention, the dynamic migration device 104 may be a device installed in the server 100 or a separate device networked with the server 100 and the mobile device 102.

In the case where the dynamic migration device 104 is a separate device, the monitoring unit 203 may be installed in the server 100 and may receive the quality information of the service monitored by the server 100.

The monitoring unit 203 automatically determines that there is a problem in using a service-based application when a quality of service (QoS) problem occurs when the quality of service falls below a predetermined threshold.

According to an embodiment of the present invention, the specific threshold may be a threshold set by default or a user set threshold.

The threshold set as a default is a threshold value stored in the dynamic migration apparatus 104 for dynamic migration of components, and the user can determine the level of QoS even without special setting.

Thresholds set by default cannot be used equally for all applications, so they can give you the option to set them. In other words, this option allows the user to determine the level of service quality desired by the user. The user setting threshold may be defined based on a service level agreement verified when using a service in a service-based mobile application.

The quality information receiver 205 receives the mobile device quality information of each of the plurality of mobile devices 102 from the plurality of mobile devices 102 when the quality of service is less than or equal to a preset threshold.

In this case, the mobile device quality information may be measured by a quality measuring unit (not shown) installed in each of the mobile devices 102.

Here, the mobile device quality information may include at least one of CPU usage, memory usage, network bandwidth, amount of batteries, and the number of applications running on the mobile device 102 of the mobile device 102.

The selector 211 selects at least one mobile device for migrating components from the plurality of mobile devices 102 using the mobile device quality information.

In more detail, the selector 211 preferentially selects one or more candidate mobile devices of the plurality of mobile devices 102 using the mobile device quality information of each of the plurality of mobile devices 102. The reason for selecting the candidate is that the mobile device to which the component is to be migrated cannot be selected using only the mobile device quality information.

Subsequently, the selector 211 selects at least one mobile device for migrating components among the candidate mobile devices by using a network state between the candidate mobile device and the server 100.

The network state may include at least one of a distance between the server 100 and the candidate mobile device, an amount of network traffic transmitted and received between the server 100 and the candidate mobile device, and a network signal strength transmitted and received between the server 100 and the candidate mobile device. can do.

Directed Acyclic Graph (DAG) notation may be used as a method for finding the shortest distance among the distances between the server 100 and the candidate mobile device, and thus, a detailed description thereof will be omitted.

The migration unit 209 migrates the components to the mobile device selected by the selection unit 207.

The storage unit 211 stores a component for providing a service to the mobile device 102.

3 is a diagram illustrating an example of a structure of a component according to an embodiment of the present invention.

As shown in FIG. 3, a component may include a class loader, a class body implementing a class, and an interface of a class.

The storage unit 211 stores components of a form compatible with the operating system corresponding to the type of operating system used in the mobile device 102. That is, since the operating system that can be used in the mobile device exists in various ways, such as Windows, Android, and ISO, the storage unit 211 may package and store the component for each type of operating system so that the component can be executed even when the component is migrated to the mobile device.

Therefore, the migration unit 209 may identify the operating system of the selected mobile device and select a component corresponding to the operating system from the storage unit 211 and transmit the selected mobile device to the selected mobile device.

4 is a flowchart illustrating the overall flow of the dynamic migration method according to an embodiment of the present invention.

Hereinafter, a process performed at each step will be described with reference to FIG. 4.

Referring to FIG. 4, in step S400, the dynamic migration apparatus 104 requests the quality of service to the server 100, and in step S405, the server 100 transfers the quality of service information to the dynamic migration apparatus 104. send.

If the dynamic migration apparatus 104 is installed in the server 100, the step of monitoring the quality information of the server 100 may be performed instead of the steps S400 to S405.

In operation S410, it is determined whether the quality of service is less than or equal to a preset threshold value, and when the quality of service is less than or equal to the threshold value, the mobile device quality information is transmitted to the plurality of mobile devices 102 in operation S415.

In operation S420, each of the mobile devices 102 transmits the mobile device quality information to the dynamic migration device 104.

The dynamic migration apparatus that has received the mobile device quality information of the mobile devices 102 selects the migration target mobile device using the mobile device quality information in step S425.

In step S430, the component to be migrated is transmitted to the selected mobile device.

Embodiments of the dynamic migration method of the component according to the present invention have been described so far, and the configuration of the dynamic migration device 104 described above with reference to FIG. 2 is also applicable to the present embodiment. A detailed description thereof will be omitted.

Hereinafter, the present invention will be described with an example in which a mobile device uses Android as an operating system for a more detailed description of the present invention.

FIG. 5 is a diagram illustrating an example of an architecture for dynamic migration when a mobile device uses Android as an operating system according to an embodiment of the present invention.

Referring to FIG. 5, a mobile agent installed in each mobile device 510 measures mobile device quality information of each mobile device, and a mobile agent installed in a server measures quality information of a service provided by a server. Management is managed by the dynamic batch manager 511.

The dynamic batch manager 511 corresponds to the configuration of the quality information receiver 205, the selector 207, and the migration unit 209 of FIG. 2, and the dynamic batch repository 513 corresponds to the configuration of the storage 211. do.

The dynamic deployment manager 511 stores the migrateable service components in the dynamic deployment repository 513 when the service components are installed in the server 503 and registers them as managed objects.

When the mobile device 501 is selected to migrate the component, the dynamic deployment manager 511 takes an apk (application package file) file implementing the service from the dynamic deployment repository 513 to the selected mobile device 501. send. At this time, the service and apk file to be moved can be kept in the configuration file.

The mobile agent installed on the mobile device 501 automatically installs the apk file on the mobile device 501 using the PackageManager () provided by Android to execute the dex file and java files specialized for the Android operating system in the apk file. do.

Then, the mobile agent installed in the mobile device 501 loads the class of the received apk file. The method used is dynamicLoader (), which is a class loading device provided by the Android operating system. The mobile agent then creates an instance at mobile device 501 utilizing the loaded class. In order to match the method provided by the instance created here with the interface of the application using the existing service, getDeclaredMethods () and getParameterTypes () methods are called and bound to each other.

Even after the service component is migrated, installed, and instantiated, the application installed on the mobile device using the service does not recognize the situation related to the dynamic migration and performs rerouting for this.

In general, in performing such a rerouting, an easy method is to change an internal value of a service-based application, but in order to perform this, a direct relationship between a service-based mobile application and a mobile agent is required. This means that mobile agents are not universal and are specialized for mobile applications.

Therefore, in the present invention, when service migration, installation, and instantiation is completed for general rerouting, related information is notified to the operating system of the mobile device, and the operating system can receive the relevant information among the applications installed in the mobile device using the service. To pass.

Table 1 below shows an example of the corresponding source code.

1. // mobile agent
1. if (serviceName.equals (% servicename%)) {
2. Intent intent = new Intent (SERVICE_DEPLOY_CHANGE);
3. context.sendBroadcast (intent);
4.} // end of if
5. else if (serviceName.equals (?) {
6. context.sendBroadcast (intent);
7.} // end of else if.
8. // broadcast receiver
9. public class MyBroadcastReceiver extends BroadcastReceiver {
10. static final String SERVICE_DEPLOY_STATE_CHANGE
11. = "? Quot ;;
12. @Override
Public void onReceive (Context context, Intent intent) {
14. if (intent.getAction (). Equals (SERVICE_DEPLOY_CHANGE)) {
15.% servicename% .setflag ();
16. else if (intent.getAction (). Equals (?) {
17.% servicename% .setflag ();
18.} // end of else if.
} // end of onReceive.

As described above, in the present invention, a mobile device having migrated a component by migrating a component for providing a service installed in a server to a specific mobile device is running on a mobile device by using a service information by executing the component by itself. The performance of the application is improved.

In addition, since the server does not receive a service provision request from the mobile device migrated to the component, the overall performance of the server is improved, it is possible to provide improved quality of service to other mobile devices.

In addition, embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks, and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Examples of program instructions, such as magneto-optical and ROM, RAM, flash memory and the like, can be executed by a computer using an interpreter or the like, as well as machine code, Includes a high-level language code. The hardware devices described above may be configured to operate as at least one software module to perform operations of one embodiment of the present invention, and vice versa.

As described above, the present invention has been described by specific embodiments such as specific components and the like. For those skilled in the art, various modifications and variations are possible from these descriptions. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: server 102: mobile device
104: dynamic migration device
201: control unit 203: monitoring unit
205: quality information receiving unit 207: selecting unit
209: migration unit 211: storage unit
501: Mobile Device 503: Server
511: Dynamic deployment manager 513: Dynamic deployment repository

Claims (13)

In the dynamic migration device of the components installed in the server to provide services to a plurality of mobile devices,
A monitoring unit configured to monitor the quality of the service provided from the server to the plurality of mobile devices by using at least one of the number of mobile devices connectable to the server and the number of mobile devices requesting service from the server;
A quality information receiver configured to receive mobile device quality information of each of the plurality of mobile devices when the quality of the service is less than or equal to a preset threshold as a result of the monitoring;
A selecting unit selecting at least one mobile device for migrating the component among the plurality of mobile devices using the mobile device quality information; And
And a migration unit for migrating the component to the selected mobile device. delete The method of claim 1,
And the quality information of the mobile device includes at least one of CPU usage, memory usage, network bandwidth, battery amount, and the number of applications running on the mobile device. Claim 4 has been abandoned due to the setting registration fee. The method of claim 3,
The selecting unit selects one or more candidate mobile devices from among the plurality of mobile devices by using mobile device quality information of each of the plurality of mobile devices,
And at least one mobile device for migrating the component among the candidate mobile devices using the network state between the candidate mobile device and the server. Claim 5 has been abandoned due to the setting registration fee. 5. The method of claim 4,
The network state includes at least one of a distance between the server and the candidate mobile device, an amount of network traffic transmitted and received between the server and the candidate mobile device, and a network signal strength transmitted and received between the server and the candidate mobile device. Dynamic migration device for the component that does it. The method of claim 1,
And a storage unit configured to store a migrateable component in a form compatible with the operating system in response to the type of operating system used in the mobile device.
The method according to claim 6,
The component migration unit identifies an operating system of the selected mobile device, selects a component corresponding to the operating system and transmits the selected component to the mobile device. Claim 8 was abandoned when the registration fee was paid. 8. The method of claim 7,
The selected mobile device automatically installs a component transmitted from the component migration unit, and transmits the installation completion information to an operating system of the selected mobile device, and the operating system selects the installation completion information using the service. Dynamic migration apparatus of the component, characterized in that for transmitting to the application installed on the mobile device. In the dynamic migration method of the components installed in the server to provide services to a plurality of mobile devices,
Monitoring the quality of the service provided by the server to the plurality of mobile devices using at least one of the number of mobile devices connectable to the server and the number of mobile devices requesting service from the server;
Receiving mobile device quality information of each of the plurality of mobile devices when the quality of the service is less than or equal to a preset threshold as a result of the monitoring;
Selecting at least one mobile device for migrating the component from among the plurality of mobile devices using the mobile device quality information; And
And migrating the component to the selected mobile device. delete 10. The method of claim 9,
The quality information of the mobile device may include at least one of CPU usage, memory usage, network bandwidth, battery amount, and the number of applications running on the mobile device. Claim 12 is abandoned in setting registration fee. 12. The method of claim 11,
The selecting may include selecting at least one candidate mobile device from among the plurality of mobile devices by using mobile device quality information of each of the plurality of mobile devices,
Selecting at least one mobile device for migrating the component among the candidate mobile devices using a network state between the candidate mobile device and the server,
The network state includes at least one of a distance between the server and the candidate mobile device, an amount of network traffic transmitted and received between the server and the candidate mobile device, and a network signal strength transmitted and received between the server and the candidate mobile device. How to migrate the components that you do. 10. The method of claim 9,
Storing the migrateable component in a form that is compatible with the operating system in response to the type of operating system used in the mobile device;
The migrating the component may identify an operating system of the selected mobile device, select a component corresponding to the operating system, and transmit the selected component to the selected mobile device.

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