Bluetooth system composition

1. Bottom hardware module.
The underlying hardware modules in Bluetooth technology systems are managed by baseband, frequency hopping, and link management. Among them, baseband is used to transmit Bluetooth data and frequency hopping. The wireless frequency modulation layer is a microwave that does not require authorization in the 2.4GHz ISM frequency band. Data stream transmission and filtering are achieved in the wireless frequency modulation layer, mainly defining the conditions that Bluetooth transceivers need to meet to function properly in this frequency band. Link management enables secure control of link establishment, connection, and dismantling.
2 Intermediate protocol layer.
The intermediate protocol layer in the Bluetooth technology system mainly includes four parts: service discovery protocol, logical link control and adaptation protocol, telephone communication protocol, and serial port simulation protocol. The role of the service discovery protocol layer is to provide a mechanism for upper level applications to facilitate the use of services in the network. Logical link control and adaptation protocols are responsible for data disassembly, reuse protocols, and control of service quality, and are the foundation for the implementation of other protocol layers.
3. High level applications.
In the Bluetooth technology composition system, the high-level application is the framework part located at the top of the protocol layer. The high-level applications of Bluetooth technology mainly include file transfer, network, and LAN access. Different types of high-level applications are wireless communication achieved through corresponding application programs and certain application modes.