BLE

Bluetooth Low Energy, as opposed to traditional Bluetooth, was designed with low power consumption in mind. That was a significant step forward by the SIG, as technology will not only be faster but also less power-hungry.

Bluetooth v4.1 was released as a software update rather than a hardware upgrade. The update prioritized usability and included Bluetooth Core Specification Addenda. Previously, the Bluetooth radio and the LTE radio did not coexist, causing interference. The problem was causing poor performance and rapid battery drain. Bluetooth 4.1 made it possible for both of these technologies to coexist in a single device at high data rates. BLE v4.1 was the first version that allowed any device to function as both a server and a client. Besides, smart connectivity was introduced, allowing devices to better run their power by allowing manufacturers to identify their own reconnection time intervals. The version of Bluetooth become commercially available around the year of 2013. In the same year, the native BLE support for Android was introduced by Google. Bluetooth Low Energy has officially entered the Internet of Things, due to its power capacity and flexibility between client and server. [1]

The Internet of Things (IoT) is a network of interconnected devices that have awareness of their surroundings. These devices are continually or ultimately transferring data to their neighbors to fulfill specific responsibilities. With this information in mind, the device called the 4th layer device can be entered into the Internet of Things.