Abstract
The Bluetooth Low Energy (BLE) is one of promising technologies widely used for Internet of things (IoT) services because of its low energy consumption. In IoT, BLE gateways should discover surrounding BLE devices in a short time. However, this requirement is difficult to achieve when the number of BLE devices is very large. As the number of BLE devices increase, the signal density increase, and the collision problems become more serious. In this paper, we analyze the performance of BLE by considering both signal collision and density. The simulation results show that there exists the optimal AdvInterval for given number of BLE devices.
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