Device pairing based on adaptive channel fluctuation control for large-scale organizations

We are developing device pairing methods that enable a user to establish two devices, such as a mobile phone and a PC as a device pair. In our previous developed method, a user can create a device pair by simultaneously clicking the pairing buttons shown on their screens. However, when the system handles many users, clicks from different users could overlap, resulting in request collisions. In this paper, we propose a device pairing method that can keep the collision probability under a permissible limit by using multiple pairing buttons. In this method, a single pairing button with a numeric identifier is shown on a mobile phone, and multiple buttons with different numeric identifiers are shown on a PC. First, a user chooses the button on the PC with the same identifier as the one on the phone. Then, the user simultaneously clicks the single button on the phone and the corresponding button on the PC. A device pair is created based on not only the simultaneity of the two clicks but also the correspondence between the two buttons´ identifiers. If too many pairing buttons are shown on a PC, it will be bothersome for the user to choose one button from many candidates: the smaller the number of pairing buttons shown on a PC, the simpler the user operation. To ensure ease of user operation, our method adaptively fluctuates the number of pairing buttons shown on a PC, i.e., the number of device pairing channels, according to the latest amount of pairing requests from users.