Concurrent Bluetooth module activation for reducing the latency of NFC connection handover

In the current NFC connection handover protocol for Bluetooth, it takes impractically long time to make a Bluetooth connection between two devices since the Bluetooth modules of the devices are activated in a serial fashion. In order to resolve this problem, we propose a novel scheme for fast NFC-to-Bluetooth connection. We devise two new handover messages called Handover Query (HQ) and Handover Ack (HA) for the concurrent activation of Bluetooth modules and revise the current handover protocol to utilize HQ/HA messages. According to the evaluation results, the elapsed time to establish a Bluetooth connection is reduced by about 30%.