One-to-Many Data Transmission for Smart Devices at Close Range.

In this paper, we propose a new method for one-to-many data transmission in smart devices at close range. Existing methods require the use of an extra application service where the operating system differs between smart devices. In contrast, the proposed method makes use of the smart device's built-in speaker and microphone to confirm the transmission signal. Data is then transmitted via Wi-Fi or long term evolution. The proposed method therefore overcomes operating system issues with existing methods. Besides, BUMP technology works in a similar way to the method we propose, it only supports one-to-one transmission. To evaluate the efficacy of the new method, we tested one-to-many data transmission in an experiment: the results showed a 96% success rate. As a result, we believe that the proposed method is an effective tool for one-to-many data transmission for smart devices at close range.