earticle

영어

Most proximity detection techniques exploit the received signal strength (RSS) measurements to detect the target object. Bluetooth low energy (BLE) beacons have been widely used in proximity detection. In the detection process, beacons broadcast signals over advertising events, and a user detects the RSS of signals. However, there are many limitations in this process. At first, the packet size in each advertising event is very small, so it is difficult for a user to get detailed information about the target object. Second, only three channels can be used by an advertising event, so a signal collision will be serious when many beacons are present. To overcome this problem, a periodic advertising event is proposed in BLE specification 5.2, which uses more channels and increases the transmission throughput. Therefore, in this paper, we propose a proximity detection scheme with periodic advertising events (PDPA). The simulation results show the proposed scheme improves the detection performance effectively in terms of collision probability.