Bluetooth is a wireless connection technology between devices within a short distance. Moreover, Bluetooth uses UHF radio waves ranging between 2.402GHz and 2.480GHz. Bluetooth helps in building PANs (personal area networks). Bluetooth can also be referred to as a standard for a short-distance wireless link between devices. Bluetooth is very useful in our life by operating and sharing data wirelessly.
Bluetooth has a wide topic including the way it works, device, technology evolves, and more others. Below we’ve discussed how Bluetooth is useful to our daily lives and the way it works.
How Does Bluetooth Work?
Bluetooth devices operate with the help of radio waves to connect to other devices. They include a cell phone, computer, smartphone, and other Bluetooth enabled equipment. Additionally, the Bluetooth device transmits information through low power radio waves. This system creates a wireless network that’s known as a personal area network or piconet. When connections are established, Bluetooth devices join the network to pair & share information.
Bluetooth devices send & receive radio waves in a band of 79 frequencies of 2.45GHz. Bluetooth connection doesn’t interfere with others nearby because they use low power to send. Furthermore, Bluetooth devices auto-detect & connect. Additionally, Bluetooth connections do not affect one another. This is because every device pair uses separate channels and it has about 79 channels.
When two devices are connecting they select a channel. If the selected channel is in use, it picks a different channel. It uses a spread spectrum frequency hopping technique.
How Many Devices Can Connect to My Device?
The number of devices to be connected via Bluetooth rely on the Bluetooth version & device. Moreover, when Bluetooth adapters get near each other, it’s software establishes a link. Up to ten Bluetooth networks known as piconets can be located within a similar area at a moment. Bluetooth devices auto-detect & can connect to about eight other devices for communication. Bluetooth operates within a range of 10m.
One device (master) operates as the controller of a network and the other devices are known as slaves. When two/more piconets join together to share information, it’s known as scattered.
Does Bluetooth Use My Phones Data?
No. Bluetooth doesn’t use mobile phone data. Instead, it utilizes short-range radio waves that connect to devices. Additionally, you will connect & use Bluetooth tech even with no cellular service. If you’re using an application that accesses data as you use Bluetooth, data will be used by the app.
The difference between Every Bluetooth versions
There are different versions of Bluetooth starting from the date it was released. Moreover, the major differences between the Bluetooth versions are the data transfer rate. Furthermore, they also differ in connection range & stability, security, and power efficiency.
- Bluetooth 1.0
This Bluetooth version was invented in 1998. Moreover, this invention was still in progress & it had many issues including anonymity. Bluetooth v1.1 fixed some of the major issues. Furthermore, Bluetooth v1.2 had major improvement. It included support for adaptive frequency hopping spread spectrum (AFH). This helps in reducing interference and offers quick transmission speeds of 721kbit/s. Other improvements include faster connection & discovery, Extended Synchronous Connections, and Host Controller Interface.
- Bluetooth 2.0
This Bluetooth version existed before 2005. This version helped in supporting Enhanced Data Rate. This uses a mixture of phase-shift keying modulation & GFSK to offer better transfer speed. Bluetooth v2.1 improved in technology. This version had secure simple pairing. Moreover, this technology improved security and pairing experience. Extended inquiry response enabled better device filtering before establishing a connection.
Furthermore, Bluetooth v2.1 extended the connection range to 33m from 10m. The transfer rate was also increased from 0.7Mbps to 3Mbps.
- Bluetooth 3.0
This Bluetooth version was released in 2009 & introduced a High rate mode. This version allows a data transfer rate of 24Mbps through the 802.11 links. Moreover, this Bluetooth version came with new features. Some include power control, L2CAP improved modes, ultra-wideband, unicast connectionless data & Alternate MAC/PHY. The major drawback of this version is more power consumption.
- Bluetooth 4.0
This Bluetooth version was launched in 2010. Moreover, this version introduced support for Bluetooth LE (low energy). Devices with Bluetooth LE can be powered using a coin cell. Due to this, it’s possible to form compact & portable devices. Additionally, Bluetooth v4.1 allowed many roles and aided more file transfer rates. Other new features included are 802.11n pal, less discovery time, double mode & topology.
Bluetooth 4.2 was launched in 2014 & made IoT (Internet of Things) possible. Major improvements in this version are LE safe connection which has a data pack length extension. Others include Internet Protocol Support Profile and Link Layer Privacy.
- Bluetooth 5.0
This version was launched in 2016. Moreover, this version concentrated on improving connectivity & the IoT by providing unbroken flow. Major improvements include slot availability mask, 2 Mbit/s PHY & low energy Advertising Extensions. Others include Low energy long-range, & LE Channel Selection Algorithm, GATT Caching & advertising Channel Index.
Bluetooth 5.0 also introduced Dual Audio. This allowed 2 Bluetooth devices to play sound from one Bluetooth device. Moreover, it also supports mesh-based hierarchy.
This Bluetooth version was launched in early 2019 and it’s now available on the hardware. Moreover, this Bluetooth version has several fixes, improvements plus new features. Some of the major updates are improved connection rate & performance. Bluetooth 5.1 creates new use cases for tracking and location. With v5.1, it’s now possible to use GATT table-caching to broadcast, connection, & sleep-cycle move faster. All of this will help in saving power.
Major improvements are the Angle of Arrival & Angle of Departure and enhanced GATT Caching. Moreover, HCI support and Advertising Channel-Index are also improvements in v5.1. Also, You can check here the major difference of Bluetooth 5.0 vs 5.1 version.
This Bluetooth version was introduced in early 2020. It’s the latest Bluetooth version on the market currently. This Bluetooth version introduces more exciting and new features that change the Bluetooth future. Major developments in v5.2 include the addition of LE-Audio. Bluetooth LE Audio allows a sound stream to be selected up by more receiving devices. Moreover, this feature enables a crowd tune in an ongoing stream. It also has an improved Attribute Protocol. More features and improvements are expected in Bluetooth v5.2.
What Devices Use Bluetooth?
Bluetooth technology is used in our everyday doings. Moreover, Bluetooth doesn’t need any network equipment like modems and routers. Furthermore, Bluetooth is used in homes, offices, health care, cars, and more other places. Some of the common devices that use Bluetooth technology are
One can connect a personal computer with any Bluetooth-enabled peripheral. They include speaker, mouse, keyboard, and others. Furthermore, Bluetooth connections can be used to share files between a PC with Bluetooth. Additionally, one can send a file to a Bluetooth enabled printer for printing.
- Car and home
Bluetooth technology allows home users to control thermostat settings, household appliances & alarms wireless. Furthermore, one can also control the lighting system. One can stream audio from a computer/phone to a Bluetooth enabled speaker or TV.
With a wireless connection, doctors/nurses can auto-log data from medical tools. The equipment includes pacemakers, stethoscopes, glucose monitors, and more others. This saves time and makes medical equipment more accessible. Bluetooth-enabled gym equipment makes it simple for one to track exercise routines.
- Consumer Electronics
Some of the Bluetooth-enabled consumer devices include phones, smartwatch, and televisions. Others include cameras, speakers, game controllers, selfie sticks, headphones, and more others.
How Bluetooth Is Evolving
Bluetooth has been evolved through a series of Bluetooth versions. They include Bluetooth v1.0, v1.2, Bluetooth v2.0, v2.1, Bluetooth v3.0, Bluetooth v4.0, Bluetooth v4.1, and Bluetooth v4.2. The current and latest Bluetooth version is Bluetooth v5.2. V2.0 eliminates radio frequency interfering with the help of frequency hopping. It also offers security against tracking and snooping.
Bluetooth v2.0 was improved from v1.2 and it had low energy consumption with higher connection speed. V2.1 was launched in 2007 and it offered more security and operated with more reduced power. Furthermore, there was an improvement in the pairing system and it didn’t need any PIN. Additionally, Bluetooth v3.0 was launched in 2009 and announced Wi-Fi connection ability. This allowed quick data transmission.
Moreover, Bluetooth v4.0 introduced Low Energy and associated functionality. This made IoT sensors like remote electronic devices that depend on coin cells possible.
Bluetooth v5.0 was later released in late 2016. This version focused on IoT technology. Sony was the first brand to incorporate Bluetooth 5.0. Furthermore, an improvement in the transfer speed was also significant in IoT tech. In early 2019 Bluetooth v5.1 was launched with some improvement from the earlier version. This version introduced the direction-finding features. This made it possible to find out direction and proximity between devices.
In Jan 2020, Bluetooth was also released on the market having some improvement from v5.1. This version introduced LE Audio. This enabled audio streamed to be chosen by more receiving devices.
How Secure Is Bluetooth?
Bluetooth connections are secure and safe. This is because you must approve the connection which needs to connect to. Additionally, Bluetooth operates in short distances only. This will be hard to interrupt the signal hence no data stealing. Moreover, to ensure that your connection is safe, you need to update your system. Furthermore, you need to use devices with the latest Bluetooth version. The latest versions have improved security features.
Moreover, you also need to connect to trusted devices only. Always turn off the Bluetooth features when you don’t need it.
Bluetooth tech has improved more and it’s future looks great. Moreover, the Bluetooth connection has made our daily work easier. With the latest release of the Bluetooth version, IoT is made possible and enjoyable. In an office, Bluetooth allows the wireless connection. Thus cables will be eliminated making your office look neat. Additionally, always buy devices with the latest Bluetooth version. With this, you’ll have faster transfer, better security, longer range, & effective power use.