Since 1998, Bluetooth protocol has been updated many times. It upgrades from audio, graphic, video transmission. Then it developed to Internet of Things data transmission. Internet transmission features with low power consumption. It maintains backwards compatibility of Bluetooth devices. Bluetooth supports more and more Internet of Things devices. Let’s introduce the history of Bluetooth.
1999: Bluetooth 1.0
The 1.0 A and 1.0 B versions of Bluetooth had many problems. Many producers point out that these products can’t be compatible. Handshaking of the two devices explores the address of the Bluetooth hardware. It can’t achieve nameless at the level of the protocol. There is a risk of data leakage. Therefore, Bluetooth has not been widely used since the first version. Electronic and Bluetooth devices with Bluetooth function were expensive.
2001: Bluetooth 1.1
Bluetooth 1.1 fits to the IEEE 802.15. 1 standard. This standard serves wireless connections between devices at a rate of 0.7 Mbps
2003: Bluetooth 1.2
Version 1.2 of Bluetooth overcomes the problem of security. It added the function of shielding the address of the equipment. It can protect the safety of users on the Internet.
2004: Bluetooth 2.0
2.0 is an improved version of 1.2. The new EDR mode allows the transmission rate to reach 3Mbps. It can support duplex mode. You can transmit documents, pictures and the like while connecting voice.
2007: Bluetooth 2.1
This version of Bluetooth adds sniff Subrating power saving function. It reduces the load on the chip. It added SSP simple and secure pairing function. This improves the pairing experience. It improves the usage and security strength.
2009: Bluetooth 3.0
The biggest improvement of this technology is the transmission rate. It is eight times that of version 2.0. 3.0 can easily transfer data between various devices. There is a new standard. It adds UCD single-track broadcast connectionless data technology. It improves the corresponding capacity of Bluetooth devices.
2010: Bluetooth 4.0
Bluetooth 4.0 achieves the first complete Bluetooth protocol standard. It proposes three modes. They are low power Bluetooth, traditional Bluetooth and high-speed Bluetooth. High-speed Bluetooth focuses on data exchange and transmission. Traditional Bluetooth focuses on two things. They are information connection and links between devices. Low power Bluetooth reduces power consumption by 90%.
2016: Bluetooth 5.0
Bluetooth 5.0 has further transmission ability with low power consumption. The transmission rate of this version is 4.2 times that of Bluetooth. So is the transmission distance. This version supports indoor positioning and navigation. It can realize indoor positioning with accuracy less than 1 meter.
We have used Bluetooth technology for many years of reform. We can see it everywhere in our life. Bluetooth mouse, keyboard, speaker, etc. The development of this technology has not yet come to an end. So, we will wait and see.