Research On The Development Of The Point-to-multipoint Transmission Of Bluetooth Audio Data

With the high speed development of the wireless communication technology, the wireless interconnection equipment is gradually penetrated into People’s daily life. Bluetooth technology can replace the cables, get rid of the complexity of the connection between the equipment effectively, which makes the data transmission and exchange more convenient and provides people with more comfortable enjoyment. The innovative applications of the Bluetooth wireless transmission of audio enable people to enjoy multimedia services whose quality has a huge ascension, so the use of Bluetooth technology for audio data wireless transmission, and building innovative entertainment service mode is a new focus of recent Bluetooth technology research, and will be an important development direction of Bluetooth technology.This paper studies the Bluetooth protocol stack and application framework deeply, and on the basis of the Bluetooth point to point wireless data transmission technology, it uses the relevant technology to build the Bluetooth audio point to multi-point wireless transmission system.1) First of all, this paper has introduced the Bluetooth wireless technology, including the characteristics of Bluetooth specification, system structure and technical application, etc. And the bluetooth radio data transmission mechanism are expounded with the characteristics of the audio data transmission.Then it analyzed the key problems in the process of Bluetooth multipoint audio transmission on the basis of the characteristics of Bluetooth technology and application requirements. Finally it proposed the Bluetooth point to multipoint audio application scenario for the wireless transmission system, and put forward some solutions for the key problems.2) This paper based on the characteristics of Bluetooth network topology and learning the working mechanism of the embedded system, mastered the key problem of system.The article expounds the overall hardware design of the system based on the analysis of the demand of the system.3) As the important part of this paper, this system is the further study of point-to-point audio transmission concept, it puts forward a software design idea and working mechanism of the multipoint audio transmission system. In addition, it focus on the software realization process of the point-to-multipoint communication strategy of the system. At the same time, it also gave the analysis of the hardware test of the system.