KR101208776B1 - System for Providing Virtual Machine and Server and Method used in the System - Google Patents

Abstract

A system for loading a virtual machine designated at a specific location, a server used therein, and a method thereof are provided. A plurality of virtual machines are connected and used by a user terminal, the hypervisor unit selectively activates the plurality of virtual machines, and the virtual machine controller activates at least one virtual machine mapped to the location of the user terminal among the plurality of virtual machines. You can ask the hypervisor to do so.

Description

System for Providing Virtual Machine and Server and Method used in the System}

The present invention relates to a system for loading a virtual machine designated at a specific location, a server used therein, and a method thereof. More particularly, the present invention relates to a specific location that can provide a virtual machine in consideration of the location and user of a user terminal. A system for loading a virtual machine, a server used therein, and a method thereof.

Virtualization technology is a technology for operating multiple operating systems (OS) in one computer. With the spread of the Internet and the advancement of virtualization technology, users can place their personal computers on a server in the form of a virtual machine and connect to the server's virtual machines to use desired functions.

However, the existing server does not consider security-related matters such as the user's location or access rights, and provides a desired virtual machine when a user requests it. In other words, the server accompanying the existing virtualization technology provides a variety of information to the user without establishing a separate policy considering the security, it is necessary to maintain security in advance by taking measures such as information leakage.

Accordingly, an object of the present invention for solving the above problems is to use a system for loading a designated virtual machine in a specific location that can be secured by having the authenticated user use the virtual machine in the authorized location and It is to provide a server and a method thereof.

According to an embodiment of the present invention, a server providing a virtual machine includes: a plurality of virtual machines connected and used by a user terminal; A hypervisor unit for selectively activating the plurality of virtual machines; And a virtual machine controller configured to determine at least one virtual machine mapped to a location of the user terminal among the plurality of virtual machines, and to request the hypervisor to activate the at least one determined virtual machine.

When the virtual machine controller determines the virtual machine, the virtual machine controller determines not only the location of the user terminal but also user identification information.

If the exclusive mode is set at the current location of the user terminal, the virtual machine controller requests the hypervisor unit to switch the remaining virtual machines except the virtual machines set to be used at the current location to an inactive state. It is done.

The deactivation state may include a first deactivation state in which power is turned off, a second deactivation state in which the usage rights of resources are recovered, and a third deactivation state in which the usage rights of the resources are maintained and the input / output control authority is recovered. do.

If the at least one virtual machine is in the first deactivation state or the second deactivation state, the virtual machine controller grants a system resource use right to a power source of the at least one virtual machine, and in the third deactivation state. If so, requesting the hypervisor to grant the input / output control right to the at least one virtual machine.

For each of the plurality of virtual machines, characterized in that it further comprises a database for mapping and storing the user identification information, the information of the changed location, the presence or absence of the exclusive propensity of the virtual machine at the changed location and the deactivation state.

If the non-exclusive mode is set at the current location of the user terminal, the virtual machine controller requests the hypervisor unit to restore all the deactivated virtual machines to the activated state.

For each of the plurality of virtual machines, characterized in that it further comprises a database for mapping and storing the user identification information, information indicating whether the deactivated state and the deactivated manner to each other.

The location of the user terminal is characterized in that the logical location is divided according to the purpose or purpose of the place.

According to another embodiment of the present invention, a server providing a virtual machine includes: a plurality of virtual machines connected to and used by a user terminal; A hypervisor unit for selectively activating the plurality of virtual machines; A location determiner configured to determine a current location of the user terminal; And a virtual machine controller which determines a virtual machine to be executed at a position determined by the position determining unit among the plurality of virtual machines, and requests the hypervisor unit to activate the determined at least one virtual machine. Characterized in that it comprises a.

The virtual machine determined to be executed is characterized in that it runs in an exclusive mode or a non-exclusive mode.

The exclusive mode or the non-exclusive mode is determined according to the position of the user terminal.

The apparatus may further include a first database configured to store information in which a physical location and a logical location are mapped to each other, wherein the location determiner obtains information about a physical location of the user terminal and refers to the information stored in the first database. The logical location of the user terminal is determined, and the virtual machine controller is configured to determine the virtual machine to be executed at the logical location by receiving the logical location of the terminal from the location determination unit.

The apparatus may further include a second database configured to store information mapped between the logical location and the virtual machine, wherein the virtual machine controller determines the virtual machine to be executed at the logical location by referring to the information stored in the second database. .

According to another aspect of the present invention, there is provided a virtual machine providing method of a server including a plurality of virtual machines connected to and used by a user terminal and a hypervisor for selectively activating the plurality of virtual machines. Determining; Determining a virtual machine to execute at a current location of the user terminal based on a current location of the user terminal among the plurality of virtual machines; And activating the determined virtual machine; It includes.

If an exclusive mode is set in executing the virtual machine at the current location of the user terminal, switching the virtual machines other than the virtual machine set to be used at the current location among the plurality of virtual machines to an inactive state; It includes more.

The deactivation state includes a first deactivation state in which the power is turned off, a second deactivation state in which the usage rights of resources are recovered, and a third deactivation state in which the usage rights of the resources are maintained and the input / output control authority is recovered.

The activating may include granting system resource usage rights to a power source of the at least one virtual machine when the at least one virtual machine is in the first deactivation state or the second deactivation state. If present, I / O control authority is given to the at least one virtual machine.

If a non-exclusive mode is set at the current location of the user terminal, recovering all the deactivated virtual machines to the activated state.

The location of the user terminal is a logical location divided according to the purpose or purpose of the place.

The method may further include determining a location of the user terminal.

In the virtual machine loading system comprising a user terminal and a server for loading at least one virtual machine provided to the user terminal according to another embodiment of the present invention, the server, based on the location of the user terminal, Determining the virtual machine to be loaded.

The server may include a plurality of virtual machines connected to and used by a user terminal; A hypervisor unit for selectively activating the plurality of virtual machines; A location determiner configured to determine a current location of the user terminal; And a virtual machine controller which determines a virtual machine to be executed at a position determined by the position determining unit among the plurality of virtual machines, and requests the hypervisor unit to activate the determined at least one virtual machine. Characterized in that it comprises a.

The virtual machine determined to be executed is characterized in that it runs in an exclusive mode or a non-exclusive mode.

The exclusive mode or the non-exclusive mode is determined according to the position of the user terminal.

The server further includes a first database that stores information in which physical locations and logical locations are mapped to each other, wherein the location determiner obtains information about a physical location of the user terminal and stores the information stored in the first database. The controller determines a logical location of the user terminal with reference to the virtual machine controller, and receives the logical location of the terminal from the location determiner to determine a virtual machine to be executed at the logical location.

According to an embodiment of the present invention, by providing a security policy according to a location, it is possible to selectively provide a virtual machine according to the user's location. In particular, the server may set a security policy in consideration of available virtual machines and exclusivity in each logical region. Thereby, the policy related to security can be strengthened.

In addition, according to an embodiment of the present invention, when a user installs a virtual machine equipped with advertisements of a specific area or store, related applications, etc. in the server, when the user is close to the specific area or store, the server uses the installed virtual machine. Can be provided to That is, the server according to the embodiment of the present invention may be utilized in the fields of indirect advertising or publicity.

1 is a functional block diagram of a system for loading a virtual machine designated at a specific location in accordance with an embodiment of the present invention.
2 is a flowchart illustrating a position determining method of a position determining unit according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating a virtual machine providing method of a VM controller according to an embodiment of the present invention.
4 is a flowchart illustrating a virtual machine control method of a hypervisor unit according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a virtual machine providing method of a server according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, those skilled in the art can understand that the present invention can be used without these various specific details. In some cases, it is mentioned in advance that parts of the invention which are commonly known in the description of the invention and which are not highly related to the invention are not described in order to prevent confusion in explaining the invention without cause.

1 is a functional block diagram of a system for loading a virtual machine designated at a specific location in accordance with an embodiment of the present invention. The system includes user terminals 10 and 20 and server 100.

The user terminals 10 and 20 illustrated in FIG. 1 may access a server 100 through a communication network 30 to use a virtual machine. The user terminals 10 and 20 may be any electronic device capable of communication, such as a desktop, a notebook, a smartphone, a dedicated terminal for accessing a virtual machine.

In the present embodiment, the server 100 loads at least one virtual machine and enables the user terminals 10 and 20 to use an application operating in the loaded virtual machine. In detail, the server 100 may determine the location of the user terminal and load a virtual machine previously specified at the determined location.

The server 100 may perform wired or wireless communication with the user terminals 10 and 20, and may provide (or load) a virtual machine in consideration of the current location and the user of the user terminals 10 and 20. have.

Throughout this specification, the server 100 'provides a virtual machine' to user terminals means loading an virtual machine, an operating system (OS) operating on the loaded virtual machine, and an application operating on the operating system (OS). May be used to mean that the user terminals 10 and 20 use it.

 In addition, the term 'service module' will be used to mean 'virtual machine', 'operating system running on the virtual machine' and 'application running on the operating system'.

To this end, the server 100 may include a hardware unit 110, a hypervisor unit 120, first to third service modules 130, 140, and 150, a first database (DB) 160, and a location. The determination unit 170, the second DB 180, and a virtual machine (VM) controller 190 may be included. For convenience of description, two user terminals 10 and 20 and three service modules 130, 140, and 150 are illustrated in FIG. 1, but are not limited thereto. Hereinafter, the user terminal 10 will be described as an example.

The hardware unit 110 provides system resources to the first to third VMs 131, 141, and 151. The hardware unit 110 may include a central processing unit (CPU), a hard disk drive (HDD), a graphics card, a ROM, a RAM, an input / output device, a battery, or a plurality of other devices. The input / output device performs a function of inputting information or outputting information to the server 100, and for example, various types of monitors, keyboards, network interface cards, external storage, and the like.

The hypervisor unit 120 grants the right to use the hardware unit 110 to at least one of the first to third service modules 130, 140, and 150. At least a portion of 110 may be used. Meanwhile, in the present specification, the expression that the hypervisor 120 assigns a use right of the hardware unit 110 to the first to third service modules 130, 140, and 150 is referred to as the first to third service. The terms 'operating (or executing, driving, or activating) the modules 130, 140, and 150' are used interchangeably.

According to an embodiment of the present invention, the server 100 further includes a communication unit (not shown) for communicating with the user terminals 10 and 20. Here, the communication unit (not shown) receives the information transmitted from the user terminals (10, 20) and transfers to the appropriate components of the server 100, on the contrary, the user terminals (10, 20) on the server 200 side Information to be transmitted may be transmitted to the user terminals 10 and 20.

For example, the communication unit (not shown) receives location information from the user terminal 10, and the location information may be transmitted to the location determining unit 170.

The hypervisor 120 selectively activates and drives the first to third VMs 131, 141, and 151, and responds to the request message from the VM controller 190. The state of 151 can be controlled. The hypervisor 120 may start an operation as soon as the server 100 is turned on, and selectively drive the first to third VMs 131, 141, and 151 after starting the operation.

According to an embodiment of the present invention, the hypervisor 120 may selectively drive the VM based on the positions of the user terminals 10 and 20. According to another embodiment, when the server 100 is powered on, the hypervisor 120 may drive a virtual machine required for the operation of the server 100. Thereafter, the hypervisor 120 may provide a virtual machine assigned thereto based on the location of the user terminals.

When driving the first to third VMs 131, 141, and 151, the hypervisor unit 120 may grant at least one of a usage right and an input / output control right of the system resource of the hardware unit 110. I / O control authority is one of system resource usage authority.

In addition, when the hypervisor unit 120 deactivates the first to third VMs 131, 141, and 151, that is, stops the operation, the hypervisor unit 120 writes to the first to third VMs 131, 141, and 151. At least one of the use authority and the input / output control authority of the system resource can be recovered.

Each of the first to third service modules 130, 140, and 150 includes a VM, an operating system operating on the VM, and at least one application operating on the operating system. Each of these can be assigned separately from each other.

The first service module 130 may include a first VM 131, a first operating system (OS) unit 133, and a first application unit (AP) 135.

A case where the first VM 131 is provided to the user terminal 10 based on the position of the user terminal 10 will be exemplified. In this case, the user terminal 10 may use a first application that operates on the first VM 131. Specifically, the user terminal 10 may receive the execution result of the first application operating on the first VM 131 and the first operating system 133 through a communication unit (not shown). Hereinafter, since the communication unit is not a main feature of the present invention, it is to be understood that the information is transmitted and received through the communication unit even if the communication unit is not explicitly mentioned in the transmission and reception of information between the server 100 and the user terminal. In this case, the first VM 131 may be granted a use right or an input / output control right of the system resource from the hypervisor 120.

The first OS unit 133 operates on the first VM 131 and may be effectively executed when the first VM 131 operates. The first OS unit 133 may be an OS such as Windows, Mac, or Linux, and controls the hardware unit 110 allocated from the hypervisor unit 110 and manages an application program operating on the first OS unit 133. can do.

The first AP unit 135 operates on the first OS unit 133 and may include at least one application program. At least one application program included in the first AP unit 135 may be a program compatible with the first OS unit 133.

The second service module 140 includes a second VM 141, a second OS unit 143, and a second AP unit 145, and the third service module 150 includes a third VM 151 and a third OS unit 153. ) And the third AP unit 155. Operations or functions of the second and third service modules 140 and 150 are substantially the same as those of the first service module 130, and thus detailed description thereof will be omitted.

The first DB 160 may store a logical area allocated to a physical location. For example, the first DB 160 may store information in which physical locations and logical locations are mapped to each other (hereinafter, referred to as "physical-logical location mapping information"). Here, the physical location is coordinate information measuring the location of the user terminal 10, and the logical location may be a logical space divided according to the purpose or purpose of the place. The location determiner 170 receives location information of the user terminals 10 and 20 and refers to the physical location-logical location mapping information stored in the first DB 160 to determine the logical location of the user terminals 10 and 20. Can be determined. The logical location may be a location arbitrarily partitioned by a user or an administrator of the server 100 such as an office, a meeting room, a lounge, a lobby, a home, and the like.

Here, the location information of the user terminals 10 and 20 may be obtained through various paths. For example, when IP is assigned to the user terminals 10 and 20, the location information may be acquired using a network management tool (for example, an LBS system of a mobile communication company) capable of identifying the location through the IP. . In addition, location information on the physical location of the user terminal 10 may be obtained by using a method used for location tracking such as GPS, such as Wi-Fi or Zigbee. In the case of using the GPS, the user terminal 10 is configured to include a GPS receiver. Since the techniques for acquiring the position information of the mobile user terminal 10 are known in the art, the position determination may be performed using such techniques. The unit 170 may obtain location information of the user terminal 10. If there are components necessary for the location determining unit 170 to obtain the location information of the user terminal 10, such components may be installed in the server 100 or may be installed as a separate device from the server 100. However, these components are well-known techniques and do not have a direct relationship with the present invention, so detailed description thereof will not be provided.

The location determiner 170 may determine a logical location of the user terminal 10 and provide the determined logical location to the VM controller 190. For example, the location determiner 170 may determine the logical location of the user terminal 10, and provide the changed logical location to the VM controller 190 when the logical location of the user terminal 10 is changed. have.

Specifically, the location determiner 170 receives physical location information about the user terminal 10 periodically or aperiodically. The location determiner 170 may determine a logical location corresponding to the physical location of the received user terminal 10 with reference to 'physical location-logical location mapping information' stored in the first DB 160. As a result of the determination, when it is determined that the logical position of the user terminal 10 is changed, the position determiner 170 may notify the VM controller 190 of the changed logical position information.

Also, the location determining unit 170 manages the changed logical area (ie, the most recent logical area of the user terminal 10) whenever the logical location of the user terminal 10 is changed. Can be stored in internal memory or on internal disk. Thus, the location determiner 170 determines the logical location corresponding to the current physical location with reference to the first DB 160, and compares the determined logical location with the logical location stored in the internal memory or the internal disk to determine the logical location. The change can be determined immediately. The position determiner 170 transmits information on the logical position to the VM controller 190 only when there is a change in the logical position.

The second DB 180 may store information related to the plurality of VMs provided by the server 100. The information stored in the second DB 180 is largely divided into four types. For this purpose, the second DB 180 may be physically or logically divided into first to fourth areas.

In the first area, identification information (ID) and user identification information (ID) of a user terminal connected to each of the plurality of VMs may be mapped to each other and stored.

In the second area, an ID of a user terminal that can use the first to third VMs 131, 141, and 151 of the server 100 and a user ID that can use each user terminal may be mapped and stored.

The third area may store a list of the first to third VMs specified for each user and location. That is, in the third area, for each of the first to third VMs 131, 141, and 151, {user ID, ID of the location where the VM is to be executed, Presence, deactivation method} can be mapped to each other and stored.

'User ID' is identification information given to a user to identify the user.

The ID of the location where the VM is to be executed is identification information assigned to each logical location to identify the logical location.

The presence or absence of exclusive propensity indicates when the user enters the location, whether the VM that was in use in the previous location should be deactivated or the VM can be kept in use. In other words, the exclusive tendency shows whether only the designated VM is set to operate in the region. In the case of exclusive propensity (ie 'exclusive mode'), the user cannot use the VM used in the previous location. Also, if it is not exclusive (ie, 'non-exclusive mode'), the user can use the VM used in the previous location at the current location.

The 'deactivation mode' is used when an exclusive propensity is set, that is, in an 'exclusive mode'. That is, in exclusive mode, this means deactivating the remaining VMs except the VM that can be executed at the current location.

The deactivation method indicates how to deactivate the remaining VMs except for the specific VM when the current mode of the user terminal is set to execute only a specific VM.

 Type of VM State Inactive First deactivation method No resources have been allocated at all, and all previously allocated resources have been recovered. For example, the OS does not reside in memory at all, and must start again when the OS is loaded into memory when it is activated in the future. Second deactivation method Maintains the current state and cannot add new operations or actions. No more resources are allocated, and only the minimum amount of resources that the OS is loaded and resides in the existing allocated resources are kept, and all remaining resources are recovered. Third deactivation method All resources are allocated and operated except the I / O permission. For example, in the background Activation status All the necessary resources are allocated to operate without restrictions

Here, the deactivation method is a first deactivation method of powering off the VM (retrieving all previously allocated resources), a second deactivation method of retrieving all remaining resources with only the resources that the VM resides in memory, and It may include a third deactivation method of maintaining the use rights of the resource (that is, operating in the background) but reclaiming input / output control rights. These deactivation schemes are exemplary and the present invention is not limited thereto, and other deactivation schemes may be used.

Now, it is assumed that a list of the first to third VMs specified for each user and location is stored in the third region as follows.

User ID ID of the location where the VM will run Exclusive propensity of VM Deactivation method VM to be run 003 P001 Non-exclusive mode 003 P002 Exclusive mode First deactivation method VM1 003 P003 Exclusive mode Second deactivation method VM2

* For convenience of explanation, the user is set as one person.

Referring to Table 1, when the user terminal is located at the location P001, all VMs are activated. That is, VM1, VM2, and VM3 are all in an activated state.

Thereafter, when the user terminal moves to the position P002, only VM1 is activated and the remaining VM2 and VM3 are deactivated in a first deactivation manner. When the user terminal moves to the position P003 again, only VM2 is activated and the remaining VM1 and VM2 are deactivated in a second inactivation manner.

When the first deactivation scheme is applied to the VM, the VM enters a first deactivation state in which power is turned off. When the second deactivation scheme is applied to the VM, the usage rights of the remaining resources except for the resource maintaining the VM are reclaimed, and the second deactivation state is entered into which the resources are no longer allocated. In addition, when the third deactivation scheme is applied to the VM, the VM enters a third deactivation state where resource usage rights are maintained and I / O control authority is reclaimed. For example, in the second inactive state, the state of the VM may be suspended and the operation may be stopped. In addition, in the third deactivation state, the operation state of the VM is maintained in the background, but the result of the VM operation is not displayed through the output device and a command cannot be received from the user.

Information on a previous state of each VM may be stored in the fourth area. That is, in the fourth region, {VM ID, user ID, deactivated method, deactivated} for each VM may be mapped and stored. The user ID is an ID of a user who previously used the VM, and whether the VM is deactivated is information indicating whether the VM was previously deactivated. In addition, the deactivated manner is information indicating a deactivated manner or a deactivated state when the VM is deactivated at a previous location. For example, if the deactivated manner is a second inactive manner, the minimum system resources for maintaining the VM Only means that it is assigned.

Meanwhile, the VM controller 190 may activate the hypervisor 120 to activate at least one VM mapped to information and a user ID of the changed location of the user terminal 10 among the first to third VMs 131, 141, and 151. ) Can be requested.

To this end, the VM controller 190 receives an ID of the user terminal 10 whose logical position is changed and an ID of the changed logical position from the position determining unit 170. The VM controller 190 checks the second area of the second DB 180 and checks the user ID mapped to the ID of the user terminal 10. The VM controller 190 inquires of the third region and requests the hypervisor 120 to activate at least one VM specified in the user ID and the changed location ID. Hereinafter, the first VM 131 will be described as an example of at least one VM.

 The VM controller 190 may check the third region to determine whether the exclusive propensity is set.

When the exclusive mode is set to the user ID and the changed location ID, the VM controller 190 hyper-transmits the VM used by the user terminal 10 to the deactivated state by using the deactivation method set in the third area. The visor 120 may make a request. The set deactivation scheme may be one of the first to third deactivation schemes described above.

On the other hand, if the non-exclusive mode is set for the user ID and the changed location ID, the VM controller 190 may restore the inactivated VM among VMs previously used by the user terminal 10 to the state before the deactivation. Request 120. To this end, the VM controller 190 may provide the hypervisor 120 with information about the deactivated scheme stored in the fourth region.

If a change in the state of the first to third VMs 131, 141, and 151 is reported from the hypervisor 120, the VM controller 190 may update the contents stored in the fourth area.

The hypervisor 120 may control the states of the first to third VMs 131, 141, and 151 according to a request of the VM controller 190. For example, when the VM controller 190 requests activation of the first VM 131, the hypervisor 120 may activate the first VM 131 using the method requested by the VM controller 190. In addition, when the VM controller 190 requests deactivation of all the second and third VMs 141 and 151 except for the first VM 131, the hypervisor 120 uses the method requested by the VM controller 190. The second and third VMs 141 and 151 may be deactivated.

2 is a flowchart illustrating a position determining method of the position determining unit 170 according to an embodiment of the present invention.

In operation 210, the location determiner 170 may determine the physical location of the user terminal 10 periodically or aperiodically.

In operation 220, the location determiner 170 may check the logical location mapped to the determined physical location from the first DB 160.

If it is determined in operation 230 that the logical position is changed, in operation 240, the position determiner 170 may notify the VM controller 190 of the changed logical position information. This is because the change in the logical position of the user terminal 10 is caused by the movement of the user terminal 10.

In operation 250, the location determiner 170 may store information on the changed logical location of the user terminal 10 in a separate storage (not shown). This is to determine whether the logical position is changed more quickly.

3 is a flowchart illustrating a VM providing method of the VM controller 190 according to an embodiment of the present invention.

In operation 310, the VM controller 190 receives an ID of the user terminal 10 whose logical location is changed and an ID of the changed logical location from the location determining unit 170 in step 240 of FIG. 2.

In operation 320, the VM controller 190 inquires the second area of the second DB 180 and checks the user ID mapped to the ID of the user terminal 10.

In step 330, the VM controller 190 inquires of the third area to identify at least one VM mapped to the changed logical location and the user ID.

In operation 340, the VM controller 190 may request the hypervisor unit 120 to activate at least one VM and receive an activation completion report from the hypervisor unit 120.

In operation 350, the VM controller 190 inquires of the third area and checks whether an exclusive mode is set in the user ID and the logical location.

If the exclusive mode is set in operation 350, the VM controller 190 may request the hypervisor 120 to deactivate the VM used by the user terminal 10 at the previous location. In operation 360, the VM controller 190 may request the hypervisor 120 to switch to the deactivated state by using the deactivation method set in the third region.

On the other hand, if the non-exclusive mode is set as a result of operation 350, in operation 370, the VM controller 190 may hyper-restore the deactivated VM among VMs previously used by the user terminal 10 to a state before deactivation. The visor 120 may make a request. The state before deactivation is one of the first to third activation states.

In operation 380, the VM controller 190 receives a report indicating that the state of the VM has been changed from the hypervisor 120.

In operation 390, the VM controller 190 stores the changed state of the VM in the fourth region of the second DB 180.

4 is a flowchart illustrating a VM control method of the hypervisor 120 according to an embodiment of the present invention.

In operation 405, the hypervisor 120 receives an activation request of at least one VM from the VM controller 190.

In operation 410, the hypervisor unit 120 reports to the VM controller 190 that activation of at least one VM is completed.

On the other hand, if the non-exclusive mode is set to the position where the user terminal 10 has moved, in step 415, the hypervisor unit 120 may receive a message requesting the recovery of another VM from the VM controller 190. . The message may include the ID of another VM and information about how the other VM was deactivated in the previous location. 'Other VM' may be a VM deactivated at a previous position among VMs previously used by the user terminal 10. 'Recovery' means to return the other VM to the state before deactivation.

In operation 420, the hypervisor 120 determines the deactivation state of at least one VM from the deactivated method.

In operation 425, if the determined deactivation state is the first inactivation state, in operation 430, the hypervisor unit 120 turns on the power of another VM and grants the use of system resource.

Alternatively, in operation 435, if the determined deactivation state is the second inactivation state, the hypervisor 120 performs operation 430.

Alternatively, in operation 440, if the determined deactivation state is a third inactivation state, in operation 445, the hypervisor unit 120 may grant an input / output control right to another VM.

After step 430 and step 445, the hypervisor 120 performs step 485 to be described later.

On the other hand, if the exclusive mode is set to the position where the user terminal 10 is moved, in step 450, the hypervisor 120 receives a message requesting the deactivation of the other VM used in the previous position from the VM control unit 190 Can be received. The message received in step 455 may include information on a method of deactivating another VM.

In operation 455, if the deactivation method is the first deactivation method, in operation 460, the hypervisor 120 may power off another VM.

Alternatively, in operation 465, if the deactivation method is the second deactivation method, in operation 470, the hypervisor 120 may recover the use right of the system resource donated to another VM.

Or, in step 475, if the deactivation method is a third deactivation method, in step 480, the hypervisor unit 120 maintains the permission to use the resource (that is, operates in the background), but the I / O control authority contributed to another VM Can be recovered.

In operation 485, the hypervisor 120 may report to the VM controller 190 that the deactivation of another VM is completed.

5 is a flowchart illustrating a VM providing method of the server 100 according to an embodiment of the present invention.

In step 510, if the logical location of the user terminal 10 is changed, the location determiner 170 determines and stores the changed logical location.

In operation 515, the location determiner 170 may notify the VM controller 190 of the changed logical location information and the ID of the user terminal 10.

In step 520, the VM controller 190 inquires the second area of the second DB 180 and checks the user ID mapped with the ID of the user terminal 10 received in step 515.

In step 525, the VM controller 190 inquires the third area of the second DB 180 to identify at least one VM mapped to the changed logical location and the user ID.

In operation 530, the VM controller 190 requests the hypervisor 120 to activate the at least one identified VM. For example, when the at least one VM identified in operation 330 is in an inactive state, the VM controller 190 may request to activate the at least one VM in consideration of a deactivated method. The manner in which the VM is deactivated may be one of the first to third deactivation schemes.

In operation 535, the hypervisor 120 may activate at least one VM in an exclusive mode or a non-exclusive mode.

In operation 540, the hypervisor 120 may report to the VM controller 190 that activation is complete.

In step 545, the VM controller 190 inquires of the third area of the second DB 180 and checks whether an exclusive mode is set in the user ID and the logical location.

In operation 550, if the non-exclusive mode is set as a result of the check, the VM controller 190 may request the hypervisor 120 to restore another VM to a state before deactivation. To this end, the VM controller 190 may provide the hypervisor 120 with information about the deactivated scheme stored in the fourth region. The deactivated scheme enables the virtual terminal to know the state before deactivation when the deactivated at the previous position.

On the other hand, in operation 555, if the exclusive mode is set as a result of the check, the VM controller 190 may request the hypervisor 120 to deactivate another VM. 'Other VM' is a VM used by the user terminal 10 at a previous location. To this end, the VM controller 190 may provide the hypervisor unit 120 with information of a deactivation method set in the third region. The set deactivation scheme may be one of the first to third deactivation schemes.

In operation 560, the hypervisor unit 120 changes the state of the other VM according to the request in operation 550 or 550. For example, the hypervisor unit 120 activates another VM by referring to a method in which another VM provided in operation 550 is deactivated. In addition, the hypervisor 120 refers to the deactivation method provided in step 555 to deactivate another VM.

In operation 565, the hypervisor 120 may notify the VM controller 190 that the state of the requested VM has changed.

In operation 570, the VM controller 190 updates the changed state of the VM in the fourth region of the second DB 180. The updated information may be used when the location of the user terminal 10 is changed.

The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, etc. 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.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: server 110: hardware unit
120: hypervisor unit 130, 140, 150: first to third service module
160: first database 170: position determination unit
180: second database 190: virtual machine (VM) control unit

Claims (26)

A plurality of virtual machines provided to the user terminal;
A first DB for storing physical-logical location mapping information in which a physical location and a logical location are mapped to each other;
A second DB for storing a first list in which {user ID, ID of logical location, and exclusive propensity of the virtual machine] are mapped to each of the plurality of virtual machines;
A position determination unit for determining a logical position from the physical position of the user terminal by referring to the physical-logical position mapping information stored in the first DB;
A hypervisor unit for selectively activating the plurality of virtual machines;
The hypervisor unit may be configured to determine at least one virtual machine mapped to a logical location of the user terminal among the plurality of virtual machines with reference to the first list stored in the second DB, and to activate the determined at least one virtual machine. And a virtual machine controller requesting the server. The method of claim 1,
The second DB further stores a second list in which a user ID and a user terminal ID are mapped to each other.
The virtual machine controller determines a user ID mapped to the user terminal ID with reference to the second list, and determines the virtual machine mapped to the user ID as a virtual machine to be activated with reference to the first list. A server for providing a virtual machine designated at a specific location, characterized in that. The method of claim 1,
The virtual machine control unit,
In the first list, if an exclusive propensity is set in the logical location of the user terminal, the hypervisor unit is requested to deactivate the virtual machines except for the virtual machines mapped for use in the logical location. Server that provides a virtual machine assigned to a specific location. The method of claim 3,
The first list may further include a deactivation scheme indicating a deactivation state of the remaining virtual machines other than the virtual machines activated at the logical location of the user terminal. The method of claim 1,
The position determining unit may determine,
When the physical location of the user terminal is changed, the logical location is determined by referring to the physical-logical location mapping information stored in the first DB, and when it is determined that the logical location is changed, notifying the virtual machine controller of the changed logical location. A server for providing a virtual machine designated at a specific location, characterized in that. The method of claim 5,
The virtual machine control unit,
With reference to the first list, among the plurality of virtual machines, the virtual machine is determined to be activated at the changed logical location, and the hypervisor unit is requested to activate the virtual machine which is determined to be activated at the changed logical location. The server for providing a virtual machine specified in a specific location, characterized in that. The method according to claim 6,
The virtual machine control unit,
When an exclusive propensity is set for the virtual machine determined to be activated at the changed logical location, the server providing the virtual machine designated at the specific location is restricted, using the virtual machine that was activated and used before the logical location was changed. . The method of claim 7, wherein
The virtual machine control unit,
When an exclusive propensity is set for the virtual machine determined to be activated at the changed logical location, the first inactive state for turning off the power to the virtual machine that was activated and used before the logical location is changed, the power is maintained, but the use of resources Rights are assigned to a specific location, characterized in that the hypervisor unit is requested to be used as either of the second inactive state to retrieve and the right to use the resource is retained, but the third inactive state to retrieve I / O control authority. Server providing the machine. delete delete delete delete delete delete A virtual machine providing method of a server comprising a plurality of virtual machines provided to a user terminal and a hypervisor unit for selectively activating the plurality of virtual machines,
Storing physical-logical location mapping information in which a physical location and a logical location are mapped to each other;
Storing a first list of {user ID, ID of logical location, and presence or absence of exclusive propensity of virtual machine} mapped to each of the plurality of virtual machines;
Determining a logical location according to a physical location of a user terminal by referring to the physical-logical location mapping information;
Determining a virtual machine to be executed at a current logical position of the user terminal based on a current logical position of the user terminal among the plurality of virtual machines with reference to the first list; And
Requesting the hypervisor unit to activate the determined virtual machine; Location-based virtual machine providing method in the server comprising a. 16. The method of claim 15,
Before storing the first list, storing a second list in which a user ID and a user terminal ID are mapped to each other;
The determining of the virtual machine may include determining a user ID mapped to the user terminal ID with reference to the second list, and activating a virtual machine mapped to the user ID with reference to the first list. Determining a location as a method of providing a location-based virtual machine at a server. 16. The method of claim 15,
The step of requesting the hypervisor unit,
In the first list, if an exclusive propensity is set in the logical location of the user terminal, requesting the hypervisor to disable the virtual machines other than the virtual machines mapped for use in the logical location. Method for providing a location-based virtual machine on the server. 18. The method of claim 17,
The first list may further include a deactivation scheme indicating a deactivation state of the remaining virtual machines except the virtual machines activated at the logical location of the user terminal. 16. The method of claim 15,
The determining of the logical location may include determining the logical location by referring to the physical-logical location mapping information when the physical location of the user terminal is changed.
If the logical location has changed, determining the virtual machine with respect to the changed logical location is performed. 20. The method of claim 19,
The determining of the virtual machine may include determining a virtual machine to be activated at the changed logical location among the plurality of virtual machines with reference to the first list.
The requesting of the hypervisor unit may include requesting the hypervisor unit to activate a virtual machine determined to be activated at the changed logical location. 21. The method of claim 20,
The determining of the virtual machine may further include referring to the first list to determine whether an exclusive propensity is set for the virtual machine determined to be activated at the changed logical location,
The requesting of the hypervisor unit may further include, when the exclusive propensity is set, request the hypervisor unit to limit the use of the virtual machine that was activated and used before the logical position is changed. Location-based virtual machine provisioning. A virtual machine loading system comprising a user terminal and a server loading a plurality of virtual machines provided to the user terminal,
The server receives a physical location of the user terminal, determines a logical location of the user terminal by referring to physical-logical location mapping information in which a physical location and a logical location are mapped to each other, and determines each of the plurality of virtual machines. At least one virtual mapped to a logical location of the user terminal among the plurality of virtual machines with reference to a first list of {user ID, ID of logical location, and existence of exclusive propensity of virtual machine} mapped to And determine a machine, and activate and provide the determined at least one virtual machine to the user terminal. The method of claim 22,
The server may determine a user ID mapped to the user terminal ID by referring to a second list in which a user ID and a user terminal ID are mapped to each other, and then refer to the first list to determine a virtual machine mapped to the user ID. And determine a virtual machine to be provided to the user terminal. The method of claim 22,
If an exclusive propensity is set in the logical location of the user terminal in the first list, the server deactivates the remaining virtual machines except the virtual machines mapped for use in the logical location. A system for loading virtual machines. The method of claim 24
The server,
When the physical location of the user terminal is changed, the logical location is determined again by referring to the physical-logical location mapping information. When the determination is that the logical location is changed, the mapping is performed to the changed logical location by referring to the first list. A system for loading a designated virtual machine at a specific location, wherein the determined virtual machine is determined. The method of claim 23, wherein
The server,
As a result of referring to the first list, when an exclusive propensity is set for the virtual machine determined to be activated at the changed logical position, the first inactive state and power to turn off the power to the virtual machine that was activated and used before the logical position is changed. Is maintained in one of the second inactive states in which the resource usage rights are retained but the third inactive state in which the usage rights of the resources are retained but the I / O control authority is restored. System for loading.

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