Bluetooth technology and the Bluetooth SIG organization tws earbuds charging case

Bluetooth is a radio technology that supports short-range communication between devices (generally within 10m). bluetooth
It operates in the 2.4GHz ISM (that is, industrial, scientific, medical) frequency band that is commonly used around the world. Its data rate is 1Mbps. Bluetooth technology can form a piconet with multiple bluetooth nodes. In the piconet, one of the bluetooth nodes is used as the master station. The master station can control up to 7 bluetooth slave stations, and multiple piconets can form a scatter network; in terms of communication security , each Bluetooth transceiver is uniquely assigned a 48-bit Bluetooth device address that follows the IEEE802 standard to ensure the security of data transmission. Because Bluetooth technology has many advantages such as open protocol, strong anti-interference ability, high cost performance, low power consumption, etc., data communication will have a wide range of application prospects in the future.bjbjaudio.com   <a style="opacity:0.0;color:#ffffff">tws earbuds charging case</a>           <a style="opacity:0.0;color:#ffffff">tws earbuds charging case</a>

The advocates of the Bluetooth SIG organization are the world's most famous IT industry companies. The organization's task is to agree to develop Bluetooth technology standards, test methods for Bluetooth products, and coordinate the use of Bluetooth technology in various countries. The SIG is so attractive because the development of Bluetooth technology is the general trend, and members participating in the SIG enjoy a series of preferential conditions. SIG is a non-profit organization of scientific research, production and marketing manufacturers. Its main responsibility is to formulate Bluetooth technical specifications and promote Bluetooth technology.bjbjaudio.com              <a style="opacity:0.0;color:#ffffff">tws earbuds charging case</a>

The collection of Bluetooth protocols constitutes the Bluetooth protocol stack. In the Bluetooth protocol stack, various protocols are arranged in a hierarchical order, forming a unique protocol architecture of Bluetooth. Bluetooth protocols can be divided into four categories according to their functions:
1) Bluetooth core protocol: baseband BB, link management LMP, link control and adaptation L2CAP services Discover the SDP protocol. Baseband (BB) realizes the transmission of Bluetooth data and frames, and the transmission method is packet exchange.
Switching and circuit switching: The establishment and control of the link can be controlled through the setting and control (LM) of the chain management layer. Encryption, control, etc.; Logical Link Control and Adaptation Protocol (L2CAP) is an upper-layer protocol and an upper-layer protocol.It is a bridge between packets of different lengths, and realizes functions such as disassembly and assembly of data, control of service quality, and protocol multiplexing.bjbjaudio.com             <a style="opacity:0.0;color:#ffffff">tws earbuds charging case</a>

2) Bluetooth serial port alternative protocol: serial port emulation RFCOMM protocol, RFCOMM is a serial port emulation protocol that provides a specific interface environment for traditional applications built on serial ports.bjbjaudio.com
3) Bluetooth telephone control protocol: there are telephone communication TCS protocol, AT command set.bjbjaudio.com
4) Bluetooth selection protocol: PPP, UDD/TCP/IP, WAP, OBEX, WAE, VCard, Vcal, IrM, etc.bjbjaudio.com                  <a style="opacity:0.0;color:#ffffff">tws earbuds charging case</a>