Patent Description:
As concepts of smart home and artificial intelligence are proposed, smart home products have gradually emerged in the market in recent years. A set-top box used for television/video reception and output is used as an example. As intelligent elements are added, products with main features such as gaming, voice recognition, and facial recognition are derived, and have won attention of many consumers. In other words, a smart home device has become a trend in a future home.

An existing smart home device usually includes a voice collection module and an image collection module. By identifying a model and a database, the existing smart home device compares collected sounds and images with those in the model and the database, and parses meanings of the sounds and images, to control the smart home device to provide feedback. For example, when "listening to music" is recognized through voice recognition, a music player is automatically opened and plays music. The voice collection module performs collection via a microphone or a microphone matrix, and the image collection module performs collection via a camera.

The camera of the image collection module usually has an image collection range less than <NUM> degrees, and is easily blocked by a wall or an arranged object. The microphone or the microphone matrix of the voice collection module has an effective sound pickup range. A sound signal collected by the microphone or microphone matrix beyond the sound pickup range is relatively weak and cannot be distinguished from noise.

The smart home device is usually located at a fixed position in a home. Because the voice collection module and the image collection module in the smart home device have limited collection ranges, the smart home device has a voice recognition range and an image recognition range that are limited and cannot cover an entire home living area. Consequently, a position at which a user uses the smart home device is limited, and user experience is affected.

<CIT> relates to method and apparatus for migrating between devices while interacting with a healthcare application. <CIT> relates to efficient migration of application state information.

To resolve the foregoing technical problem, specific implementations of this application provide an inter-device data migration method and a device. When a user interacts with a device through an application on the device, if the user goes beyond a signal collection range of the device, the application that is run on the device is migrated to a device with a signal collection range in which the user is currently located, for running. In this way, the user continues to interact, through the application, with the device to which the application is migrated.

Preferred embodiments have been defined in the dependent claims.

<FIG> is a diagram of an application scenario of a device according to a specific implementation of this application. As shown in <FIG>, a first device <NUM>, a second device <NUM>, and a third device <NUM> are included. In an example, the first device <NUM> and the third device <NUM> may be smart set-top boxes, and the second device <NUM> may be a smart speaker. The first device <NUM>, the second device <NUM>, and the third device <NUM> are connected to a same local area network. The first device <NUM>, the second device <NUM>, and the third device <NUM> may be all connected to a same router in a wired or wireless manner, to establish the local area network.

Certainly, the application scenario is merely an example in the specific implementations of this application. The first device <NUM>, the second device <NUM>, the third device <NUM>, and application scenarios in which the first device <NUM>, the second device <NUM>, and the third device <NUM> are located are not limited in this application. Certainly, the first device <NUM>, the second device <NUM>, and the third device <NUM> may alternatively each establish a network connection in any other manner.

In a specific implementation of this application, at least one device may perform an operation based on a voice and/or a face and an action. In an example, the first device <NUM> and the third device <NUM> each include an image collection module and a voice collection module, and the second device <NUM> includes only a voice collection module. The image collection module is usually a camera, and the voice collection module is usually a microphone or a microphone matrix. Certainly, any device in this application may perform an operation by using another feasible operation method. The operation method of the device is not limited in this application.

In a process of performing intelligent control on a device, the device may be controlled through voice recognition, facial recognition, or action recognition to enable or disable some functions or applications. For example, when the device recognizes "listening to music" through voice recognition, the device automatically opens a music player and plays music.

The image collection module, that is, the camera, usually has an image collection range less than <NUM> degrees, and is easily blocked by a wall or an arranged object. The voice collection module, that is, the microphone, has an effective sound pickup range. A sound signal that is collected beyond the range is relatively weak, and cannot be distinguished from noise. In addition, based on a position of the microphone in the product and an arrangement manner of the microphone matrix, the voice collection module has different sound pickup ranges in different directions.

Therefore, a data collection range of the device is limited. When using an application on the device, a user needs to be located in the data collection range of the device, to avoid impact on user experience.

To resolve the foregoing technical problem, a device in a specific implementation of this application includes an inter-device data migration method. When a user interacts with a first device through an application on the first device, the first device may detect whether the user is located in a data collection range of the first device. When the user is not located in the data collection range of the first device, the first device needs to determine a current position of the user. When the user is located in a data collection range of a second device in a network, the first device sends to-be-migrated data to the second device, so that the application and a service that are run on the first device are migrated to the second device and continue to be run.

Certainly, the second device may be alternatively used as an information collection module of the first device. The first device receives data of the user collected by the second device, and continues interacting with the user based on the data of the user collected by the second device. In this way, the user can freely move when performing interaction through the application.

In an example, <FIG> is a schematic diagram of a position of a device in a network according to a specific implementation of this application. As shown in <FIG>, a first device <NUM>, a second device <NUM>, and a third device <NUM> are included. The first device <NUM>, the second device <NUM>, and the third device <NUM> are located in a local area network <NUM>. The first device <NUM> has a first data collection range <NUM>, the second device <NUM> has a second data collection range <NUM>, and the third device <NUM> has a third data collection range <NUM>.

The first device <NUM> starts a voice application according to an instruction and performs a corresponding voice service. When starting the application, the first device further determines whether the application is an application for which a position of a user needs to be determined. When the application is the application for which the position of the user needs to be determined, the first device collects the position of the user, for example, a current position <NUM>. When the application is an application for which the position of the user does not need to be determined, the first device does not perform another operation.

The first device collects the position of the user by photographing an image via a camera on the first device and/or collecting voice information via a microphone on the first device. The first device determines, based on the collected image information and/or voice information, whether the collected image information and/or voice information include/includes image information and/or voice information of the user. When the collected image information and/or voice information include/includes the image information and/or voice information of the user, the first device determines that the user is located in the range of the first device. When the collected image information and/or voice information do not include/does not include the image information and/or voice information of the user, the first device determines that the user is not located in the range of the first device.

When the first device <NUM> determines that the user is not located in the data collection range <NUM> of the first device <NUM>, the first device <NUM> sends broadcast information to another adjacent device in the network. The second device <NUM> and the third device <NUM> can receive the broadcast information sent by the first device.

The second device <NUM> and the third device <NUM> can start, based on the broadcast content, a program for monitoring a position of the user. When the third device <NUM> captures a position <NUM> of the user, the third device <NUM> sends acknowledgment information to the first device <NUM>, where the acknowledgment information is used to indicate that the user is located in the data collection range of the third device.

After determining, based on the acknowledgment information, that the user is located in the data collection range of the third device, the first device further needs to determine whether the third device supports the application that is run on the first device. When the third device can support the application, the first device sends to-be-migrated data to the third device. The to-be-migrated data includes information about the application and progress information, and the progress information includes but is not limited to a service scenario and progress of the service. The third device <NUM> attempts to restore content of the service based on received information about the service that is run on the first device <NUM> for the user, and continues to interact with the user.

After the third device <NUM> restores the service that is run on the first device <NUM> for the user, the third device <NUM> further returns a corresponding notification to the first device <NUM>. The first device closes, based on the notification, the application that is run on the first device.

When the third device <NUM> cannot run the service, the third device <NUM> sends collected information of the user to the first device <NUM>. When receiving the information of the user sent by the third device <NUM>, the first device <NUM> stops collecting information of the user, and the first device <NUM> continues interacting with the user through the application based on data of the user collected by the third device <NUM>.

The following more specifically describes inter-device service migration in the specific implementations of this application by using a specific implementation. <FIG> shows a method for migrating a service in a local area network according to a specific implementation of this application. As shown in <FIG>, the method specifically includes the following steps.

S301: A first device interacts with a user through an application in a data collection range.

The first device includes a camera and/or a microphone matrix. The camera can obtain an action of a user or perform facial recognition, and the microphone matrix can recognize a voice of the user. That the first device opens the application according to an instruction (which may include a voice and/or a face and an action) and performs a corresponding operation belongs to the prior art. This is not limited in this application.

The user performs an operation on the first device based on the voice and/or the face and the action, so that the first device performs a corresponding operation based on the voice and/or the face and the action. In addition, the first device further receives, through the application, information sent by the user. For example, the first device collects voice information and image information of the user through video chat software.

Optionally, when the first device opens the application, the first device further determines whether the application is required for interaction between the first device and the user. If the application is required for interaction between the first device and the user, the first device starts a program for detecting a position of the user. The program for detecting a position of the user may obtain, via the camera, whether the user is located in the data collection range of the first device. Certainly, the program for detecting a position of the user may alternatively determine, based on a sound collected by the microphone matrix, whether the collected sound includes a voice of the user, to determine whether the user is located in a data collection range of a second device.

The first device collects the position of the user by photographing an image via the camera on the first device and/or collecting voice information via a microphone. The first device determines, based on the collected image information and/or voice information, whether the collected image information and/or voice information include/includes image information and/or voice information of the user. When the collected image information and/or voice information include/includes the image information and/or voice information of the user, the first device determines that the user is located in the data collection range of the first device. When the collected image information and/or voice information do not include/does not include the image information and/or voice information of the user, the first device determines that the user is not located in the data collection range of the first device.

S302: When determining that the user is not located in the data collection range of the first device, the first device determines that the user is located in a data collection range of a second device in a network.

When determining that the user is located in the data collection range of the first device, the first device does not perform another operation. When determining that the user is not located in the data collection range of the first device, the first device sends detection information to at least one adjacent device. The detection information may be sent through broadcast, or may be sent in another manner. This is not limited in this application.

In a specific implementation of this application, the first device includes a plurality of devices that are connected to each other. The plurality of devices may be shown in <FIG>. The first device may determine a current position of the user via the plurality of devices that are connected to each other. Each of the plurality of devices that are connected to each other determines whether the user is located in a data collection range of the device, to determine the current position of the user.

When determining that the user is located in the data collection range of the second device, the first device further needs to determine whether the second device supports the application through which the first device interacts with the user.

In an aspect, each device in the network may store information about a hardware device and a software device that are included in another device. The first device determines, by querying information about a hardware device and a software device that are included in the second device, whether the second device can execute the application.

In an example, each device in the network sends, when being powered on, information about a hardware device included in the device and information about software installed on the device. For example, the sent information about the hardware device is used to indicate that the device includes camera information and microphone information, and the information about the installed software is used to at least indicate specific software that can be currently run by the device. After receiving the information that is sent by the second device and that is about the hardware device and the installed software that are included in the second device, the first device stores the information. The first device determines, by comparing the information about the hardware device included in the second device and/or the information about the installed software included in the second device with software and hardware that are required for executing the application, whether the second device can execute the application.

In a second aspect, the first device may determine, by sending corresponding query information to the second device, whether the second device can execute the application.

S303: When the user is located in the data collection range of the second device and the second device supports the application, the first device sends to-be-migrated data to the second device.

The to-be-migrated data is used to enable the second device to interact with the user based on the to-be-migrated data. The to-be-migrated data includes information about the application and progress information. The information about the application includes but is not limited to a name or an identifier of the application, and the progress information indicates progress of interaction between the first device and the user.

S304: The second device interacts with the user through the application based on the to-be-migrated data, and the second device executes the application based on the received information about the application on the first device.

When the second device receives the to-be-migrated data sent by the first device, the second device executes corresponding information based on the information that is about the application and that is included in the received to-be-migrated data, and adjusts progress information in a corresponding service scenario to be the same as the progress information included in the to-be-migrated data; and the second device interacts with the user through the application based on collected information sent by the user. In this way, the application through which the first device interacts with the user is automatically migrated to the second device, and the second device continues to interact with the user.

When the second device opens the corresponding application, the second device further sends response information to the first device, where the response information is used to indicate that the second device has interacted with the user through the application; and the first device closes, based on the response information, the application that is run on the first device.

Optionally, when the second device cannot execute the application, the second device sends collected information of the user to the first device. The first device continues interacting with the user based on the data of the user collected by the second device.

Optionally, when the second device detects the user, the second device sends information for stopping detection of the user. The second device may directly send the information for stopping detection of the user to the first device and the third device, or may send the information for stopping detection of the user to the local area network. The information that is used for stopping detection of the user and that is sent through the local area network may be sent through broadcast, or may be sent in another manner. This is not limited in this application. When another device receives the information that is used for stopping detection of the user and that is sent by the second device, the device that is detecting a position of the user based on the detection information stops the detection.

The following specifically describes, by using a specific implementation, that the first device determines the current position of the user via the plurality of devices that are connected to each other.

In an example, <FIG> shows a method for determining a current position of a user according to a specific implementation of this application.

S401: A first device determines that a user is not located in a data collection range of the first device.

In a specific implementation of this application, the first device may determine, based on collected sound information or image information, whether the user is located in the data collection range of the first device. Specifically, the first device includes an image collection module and a voice collection module. The image collection module is usually a camera, and the voice collection module is usually a microphone or a microphone matrix. The first device takes photos via the camera and/ or collects voice information via the microphone. The data collection range of the first device is a photographing area of the camera and an area in which the microphone can collect effective voice information. The first device determines, by analyzing whether the image information and/or application information include/includes image information and/or voice information of the user, whether the user is located in the data collection range of the first device. When determining, by analyzing the image information and/or voice information, that the image information and/or voice information do not include/does not include the image information and/or voice information of the user, the first device determines that the user is not located in the data collection range of the first device.

S402: Send detection information to at least one device in a network.

When the first device <NUM> determines that the user is not located in the data collection range <NUM> of the first device <NUM>, the first device <NUM> sends the user detection information to another adjacent device in a local area network. The another adjacent device includes a second device, so that the another device adjacent to the first device in the local area network determines whether the user is located in a data collection range of the another adjacent device.

Optionally, the at least one device in the same local area network is a device that can receive information about an application that is opened on the first device and through which interaction needs to be performed. For example, when the application opened on the first device is a video application, the at least one device in the same local area network is a device that can collect both sound information and image information.

Optionally, before sending the detection information to the at least one device in the local area network, the first device further determines a function of the another device included in the local area network. When the device is a smart device including a camera and/or a microphone or a microphone matrix, the first device sends the detection information to the device. When the device is a device that does not include a camera and/or a microphone or a microphone matrix, the second device does not send the detection information to the device.

S403: The second device determines, based on the detection information, whether the user is located in a data collection range of the second device.

The another device that is adjacent to the first device and includes the second device can receive the detection information sent by the first device. The following uses the second device as an example for description. A processing method used when another device receives the detection information sent by the first device is the same as a processing method used when the second device receives the detection information.

The second device determines, based on the detection information, whether the user is located in the data collection range of the second device. A method for determining, by the second device, whether the user is located in the data collection range of the second device is the same as a method for determining, by the first device, whether the user is located in the data collection range of the first device.

The second device detects position information of the user by photographing an image via a camera on the second device and/or collecting voice information via a microphone on the second device. The second device determines, based on the collected image information and/or voice information, whether the collected image information and/or voice information include/includes image information and/or voice information of the user. When the collected image information and/or voice information include/includes the image information and/or voice information of the user, the second device determines that the user is located in the range of the second device. When the collected image information and/or voice information do not include/does not include the image information and/or voice information of the user, the second device determines that the user is not located in the range of the second device.

The detection information may be a cyclic instruction including a longest detection time. In an example, the detection information may further specify a cycle execution time or a quantity of cycle execution times. Certainly, when the second device determines, based on the detection information, that the user is not located in the data collection range of the second device, the second device performs next detection. When a time or a quantity of times for executing the detection information by the second device reaches a predetermined time or a predetermined quantity of times, the second device stops executing the detection information.

S404: The first device receives acknowledgment information sent by the second device in the at least one device.

When the second device determines that the user is located in the data collection range of the second device, the second device sends the acknowledgment information to the first device, to notify the first device that the user is located in the data collection range of the second device.

S405: Determine, based on the acknowledgment information, whether the user is located in the data collection range of the second device in the network.

The first device receives the acknowledgment information sent by the second device. The first device determines, based on the acknowledgment information, that the user is located in the data collection range of the second device.

The following specifically describes, by using a specific implementation, that the first device determines, by sending corresponding query information to the second device, whether the second device can execute the application.

In an example, <FIG> shows a method for determining whether a second device can execute an application according to a specific implementation of this application.

S501: A first device determines that the user is located in a data collection range of the second device in a network.

A manner of determining a current position of the user by the first device is the same as a manner shown in <FIG>. Details are not described again in this application.

S502: The first device sends application adaptability detection information to the second device.

The application adaptability detection information includes information about the application that is run on the first device.

S503: The second device determines, based on the application adaptability detection information, whether the second device can execute the application.

In addition, after performing corresponding detection, the second device further sends a detection result to the first device.

S504: The first device receives detection result information returned by the second device.

The detection result information is used to indicate whether the second device can execute the application. After receiving the detection result information, the first device determines, based on the detection result information, whether the second device can execute the application.

<FIG> shows a device according to a specific implementation of this application. The device includes an interaction module <NUM>, a determining module <NUM>, and a sending module <NUM>.

The interaction module <NUM> is configured to interact with a user through an application in a data collection range of data. The determining module <NUM> is configured to: when determining that the user is not located in the data collection range of the device, determine that the user is located in a data collection range of another device in a network. The sending module <NUM> is configured to: when the another device supports the application, send to-be-migrated data to the another device, so that the another device interacts with the user based on the to-be-migrated data, where the to-be-migrated data includes information about the application and progress information, and the progress information indicates progress of interaction between the device and the user.

Optionally, the determining module <NUM> is specifically configured to: when determining that the user is not located in the data collection range of the device, send detection information to at least one device in the network, where the detection information is used to indicate the at least one device to detect whether the user is located in a data collection range of the at least one device; and receive acknowledgment information sent by the another device in the at least one device, where the acknowledgment information is used to indicate that the user is located in the data collection range of the another device.

Optionally, the detection information is sent through broadcast.

Optionally, the receiving module <NUM> is configured to: when a second device does not support the application, receive data of the user collected by the another device. The interaction module <NUM> is further configured to continue interacting with the user based on the data of the user collected by the second device.

<FIG> shows a device according to a specific implementation of this application. The device includes a receiving module <NUM>, a determining module <NUM>, a sending module <NUM>, an interaction module <NUM>, and a collection module <NUM>.

The receiving module <NUM> is configured to receive detection information sent by a first device, where the detection information is used to indicate the device to detect whether a user is located in a data collection range of the device. The determining module <NUM> is configured to determine that the user is located in the data collection range of the device. The sending module <NUM> is configured to send acknowledgment information to the first device, where the acknowledgment information is used to indicate that the user is located in the data collection range of the device. The receiving module <NUM> is further configured to: when the device supports an application, receive to-be-migrated data sent by the first device, where the to-be-migrated data includes information about the application and progress information, and the progress information indicates progress of interaction between the first device and the user. The interaction module <NUM> is configured to interact with the user through the application based on the to-be-migrated data.

Optionally, the collection module <NUM> is configured to collect data of the user when the device does not support the application. The sending module <NUM> is further configured to send the data of the user to the first device, where the data of the user is used to indicate the first device to continue interacting with the user based on the data of the user.

Optionally, the sending module <NUM> is further configured to send detection stop information to at least one device in a network, where the detection stop information is used to indicate a device to stop detection, where the device is detecting, based on the detection information sent by the first device, whether the user is located in a data collection range of the device.

<FIG> is a schematic structural diagram of a device according to an implementation of this application. As shown in <FIG>, the device may be shown in <FIG>. The device includes a processor <NUM>, a memory <NUM>, and a communications interface <NUM>.

The processor <NUM> may be a general-purpose central processing unit (Central Processing Unit, CPU), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits. The processor is configured to execute a related program, to implement the technical solutions provided in the foregoing method implementations of the present disclosure.

The memory <NUM> may be a read only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device, or a random access memory (Random Access Memory, RAM). The memory <NUM> may store an application program. When the technical solutions provided in the implementations of the present disclosure are implemented through software or firmware, program code used to implement the steps performed by the first device in the foregoing implementations in <FIG> in the present disclosure and any optional technical solution provided in the method implementations is stored in the memory <NUM>, and is executed by the processor <NUM>.

The communications interface <NUM> is configured to connect to another device.

The processor <NUM> is specifically configured to:
interact with a user through an application in a data collection range of the device; and when determining that the user is not located in the data collection range of the device, determine that the user is located in a data collection range of another device in a network. When the another device supports the application, the communications interface <NUM> sends to-be-migrated data to the another device, so that the another device interacts with the user based on the to-be-migrated data, where the to-be-migrated data includes information about the application and progress information, and the progress information indicates progress of interaction between the first device and the user.

When determining that the user is not located in the data collection range of the device, the device sends detection information to at least one device in the network, where the detection information is used to indicate the at least one device to detect whether the user is located in a data collection range of the at least one device. The device receives acknowledgment information sent by the another device in the at least one device, where the acknowledgment information is used to indicate that the user is located in the data collection range of the another device.

The detection information is sent through broadcast.

When the another device does not support the application, the device receives data of the user collected by the another device, and continues interacting with the user based on the data of the user collected by the another device.

The steps and the specific implementations performed by the first device in the foregoing implementations in <FIG> are also applicable to the device shown in <FIG> in this implementation. To enable the specification to be brief, details are not described herein.

<FIG> is a schematic structural diagram of a rating apparatus according to an implementation of this application. As shown in <FIG>, the device may be specifically shown in <FIG>. The device includes a processor <NUM>, a memory <NUM>, and a communications interface <NUM>.

The memory <NUM> may be a read only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device, or a random access memory (Random Access Memory, RAM). The memory <NUM> may store an application program. When the technical solutions provided in the implementations of the present disclosure are implemented through software or firmware, program code used to implement the steps performed by the second device in the foregoing implementations in <FIG> in the present disclosure and any optional technical solution provided in the method implementations is stored in the memory <NUM>, and is executed by the processor <NUM>.

The processor <NUM> is specifically configured to:.

The steps and the specific implementations performed by the second device in the foregoing implementations in <FIG> are also applicable to the device shown in <FIG> in this implementation. To enable the specification to be brief, details are not described herein.

A specific implementation of this application provides a computer-readable storage medium. The computer-readable storage medium stores one or more programs. The one or more programs include an instruction, and when the instruction is executed by an electronic device including a plurality of application programs, the electronic device is enabled to perform the method procedures shown in <FIG>.

A specific implementation of this application further provides a computer program product. The computer program product may run on an access network device. When the computer program product runs on the access network device, the access network device is enabled to perform the methods shown in <FIG>.

It should be noted that the implementations provided in this application are merely optional implementations described in this application. Based on the implementations, a person skilled in the art may design more implementations. Therefore, details are not described herein.

A person of ordinary skill in the art may be aware that, in combination with the examples described in the implementations disclosed in this specification, units and algorithm steps can be implemented by electronic hardware or a combination of computer software and electronic hardware.

A person skilled in the art may clearly understand that, for the purpose of convenient and brief description, for detailed working processes of the foregoing system, apparatus, and units, refer to corresponding processes in the foregoing method implementations, and details are not described herein again.

In the several implementations provided in this application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the described apparatus implementation is merely an example. For example, division into the units is merely logical function division and may be other division in actual implementation. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces.

Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the implementations.

In addition, functional units in the implementations of this application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.

When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of this application essentially, or the part contributing to the prior art, or all or some of the technical solutions may be implemented in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to perform all or some of the steps of the methods described in the implementations of this application. The foregoing storage medium includes: any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc.

Claim 1:
A method for inter-device data migration in a network comprising a first device, a second device, and a third device, said second and third devices being adjacent to the first device, wherein the method comprising:
a. detecting (<NUM>) whether a user is located within a data collection range of the first device;
b. determining a current position of the user if the user is not located within the data collection range of the first device, and sending detection information to at least one adjacent device, the detection information being used to indicate to the at least one adjacent device to detect whether the user is located in a data collection range of the at least one adjacent device;
c. identifying a target device within the network with a data collection range that includes the user's current position, wherein the target device is one of the second device and the third device;
d. when determining that the target device supports the application, sending (<NUM>) to-be-migrated data from the first device to the target device;
e. migrating the application and service running on the first device to the target device to continue operation.