Bluetooth is a short-range communications support equipment (usually within 10m) radio technology. Information can be exchanged between the wireless including mobile phones, PDA, wireless headsets, laptop computers, peripherals and other related equipment. The use of "Bluetooth" technology, can effectively simplify the communication between the mobile communication terminal device, it is possible to simplify the communication device successfully between the Internet and the Internet, so that data transfer becomes faster and more efficiently, the wireless communication widen the road. Bluetooth uses a decentralized network structure, and fast frequency hopping and short packet technology to support point to point and multipoint communication, work in the global generic 2.4GHz ISM (ie industrial, scientific, medical) band. Data rate of 1Mbps. Using time division duplex transmission scheme to achieve full-duplex transmission