| Bluetooth technology is a kind of global-open criteria of wireless communication, which provide with low-cost and low-consumption connection for user. It has been popular in the wireless personal area network, and been the necessary part of PC and terminal.The paper presents the scheme of the intelligent terminal hardware and software system. The Freescale i.MX21 is the core of the intelligent terminal's hardware platform, which is the 32-bit ARM kernel embedded microprocessor, Periphery expands Bluetooth module, Ethernet communication module, SD card module and so on. The paper will depict the design of the hardware in detail. Based on the hardware platform, we port the embedded OS (operating system) Linux. And the whole software is divided into three parts of OS, driver and application software. And the software about Bluetooth will be in detail analysis. Afterwards, describe the application situation of the Bluetooth in the wireless LAN, and figure out there are some disadvantage in the mobile state. Such as, call network phone when moving between the micronetworks, the performance is bad because of the long hand-over time. At last, introduce the middleware to improve the performance of the quality of the real-time service when moving between micronetworks. |
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