Poster: Discovery of Disappeared Node in Large Number of BLE Devices Environment

Abstract

In Bluetooth Low Energy (BLE), only three channel is used for advertisement, so the signal collision is serious when there is a large number of BLE devices in a narrow area. In this kind of environment, how to identify a disappeared is a challenge. In this paper, we analyze the relationship between the number of BLE devices and signal collision rate. Also, we provide a threshold to identify the disappeared devices.