Since its invention by Ericsson in 1994, Bluetooth has been used as a wireless channel for connecting devices. Since then, Bluetooth has become the standard for wireless communication in wearables, gadgets, and other devices. Bluetooth is now available in automobiles, speakers, wearables, medical equipment, wireless headphones, and shoes, among other places. It is reasonable to assume that if we possess any modern gadget, we have come across and utilized Bluetooth technology at some time. In other terms, Bluetooth is a short-range wireless technology means for transmitting data over a short distance between two electronic devices. The usage of wires for connectivity is eliminated with this method. For example, we may now listen to music with a headset on the move without plugging it into the mobile device's headset jack.
IoT
The Internet of Things network comprises web-enabled smart gadgets that employ computers, software, and communication gear to receive, analyze, and transfer data from their surroundings. The sensor data obtained from these IoT devices are then shared with an IoT gateway or another edge device, via which data is routed to the cloud or appropriate channels for further analysis. These gadgets exchange data with other connected devices and act on their created data.
Bluetooth technology has progressed from standard Bluetooth to smart Bluetooth, with the most recent version being Bluetooth 5. Compared to previous generations, Bluetooth 5 provides four times the range, quadruple the speed, and 800 percent greater data transmitting frequency. Companies with vast and vital infrastructure may have 100 percent uptime and cost-efficient solutions by installing Bluetooth 5-enabled IoT devices thanks to these upgraded characteristics.
Furthermore, Bluetooth Low Energy (BLE), a form of Bluetooth optimized for low-powered devices, can assist IoT devices in conserving energy by keeping them in sleep mode until they are connected. BLE is perfect for IoT applications since it can pair and reconnect with devices in six milliseconds instead of six seconds with traditional Bluetooth. This not only improves operating efficiency but also increases device availability.
The hardware, communication, software system, and application layers make up a typical IoT design, with Bluetooth serving as the communication layer. The communication layer, which consists of a multi-layer stack that includes data connection, network or transport, and session protocols, is a vital link between the layers. Bluetooth, often known as BLE, is a data communication layer that links sensors to sensors or sensors to gateways. On the other hand, the network layer is in charge of routing or transporting packets across the network using the best pathways possible. The session layer protocols allow communication between different aspects of the IoT communication subsystem.
Bluetooth technology is less expensive to implement than other communication protocols such as RFID, NFC, WLAN, LoRa WAN, LTE-A, and WiFi-Direct. It also allows for wireless communication and the creation of an immediate Personal Area Network (PAN) in areas where wireless infrastructure is lacking. It features a uniform methodology and minimum interference. Furthermore, by increasing the power beyond one milliwatt, Bluetooth's standard range of 0-30 meters may extend.
Remote controls, smart home gadgets, wearables, tracking devices, and keyboards, among others, have been designed to reduce the stress and financial costs associated with consumers having to change batteries regularly owing to the usage of energy-saving Bluetooth programs and energy-harvesting models. Bluetooth IoT applications are used in industrial and enterprise solutions. These include asset tracking, indoor locating, beacons, industrial automation sensors, tire pressure monitors, electronic shelf labels, etc., which will reduce ownership and maintenance costs because battery replacement is no longer needed.
Drawbacks
So far, we have looked at the positive side of the Bluetooth-enabled IoT. But, there are certain limitations too. Let's look at some of the significant drawbacks of Bluetooth-enabled IoT.
1. Security is one of Bluetooth's significant drawbacks. This is because it functions on radio frequency, which allows it to pass through barriers.
2. Because HomeRF technology uses the same frequency, it suffers from interference.
3. In comparison to WiFi, the bandwidth is limited.
4. In comparison to when Bluetooth turns off, battery utilization is higher. Bluetooth low energy or innovative Bluetooth technology is created to extend the battery life.
Bluetooth is a short-range wireless technology for transmitting data over a short distance between two electronic devices.
Define Bluetooth Low Energy.
Bluetooth Low Energy (BLE), a form of Bluetooth optimized for low-powered devices, can assist IoT devices in conserving energy by keeping them in sleep mode until they are connected.
Give some advantages of Bluetooth with IoT.
It uses very little energy. It can travel through solid objects. Its range is superior to that of infrared communication.
Give some disadvantages of Bluetooth with IoT.
In rare circumstances, it may lose connectivity. When compared to WiFi, it has limited bandwidth. Only short-range communication between devices is possible.
Name some Bluetooth-enabled IoT devices.
Wrist bands, Blood pressure meters, Security sensors, Head sensors, Security cameras, Smart meters, Lighting devices, etc.
Conclusion
Bluetooth in IoT will make people's lives and duties easier by automating various activities through a variety of Bluetooth IoT initiatives. IoT devices will secure more factories and large-scale housing communities such as estates and apartment towers in the same line. Interestingly, Bluetooth technology enables all devices and apps to communicate with one another fluid and precise.
Practice more on code studio and do check the following articles
310+ registered 
