Design and Implementation of an Application State Migration Mechanism between Android Devices

Devices equipped with Android, which is the OS for mobile devices, spread widely, and one user may own plural devices. It is thought that the user uses plural devices properly depending on the situation. For example, the user may use a small device on the way, and a large device in the office. In such situation, it is necessary for improvement of work efficiency to change work environment seamlessly at plural devices. We design and implement a platform to transmit an application used now to other device. This platform enables a user to resume work with the other device. The platform acquires a state of application working at a transmission side device, and transmits it using the communication between the devices. The application in a reception side is restored by the platform using the state. Bluetooth is used for the communication. We offer the platform as a function of Android OS. In this article, we describe the implementation of the platform, the measurements of time to use it, and consideration about results of the measurements.