针对移动通信与蓝牙网络异构壁垒,设计一种以ARM 处理器为核心的ULP/LTE 网关系统。网关主控采用ARM9 控制板,通过串口分别连接LTE 的中兴EM3760 以及ULP 的芯片CC2540,并设计该芯片外围电路,在主控芯片中移植μC/OS-II操作系统,以实现网络数据帧协议转换。测试结果表明,该网关系统实现了ULP 与LTE 两种异构网络之间的数据协议转换,且在实际应用中性能良好,可将ULP 蓝牙网络节点采集数据通过LTE 网络快速地传输至云端。
This paper presents a design of gateway system with ARM processor as the core based on LTE and ULP network to overcome the heterogeneous barrier between mobile communication and ULP Bluetooth network. ARM9 based control panel was used as the gateway control, which was connected to the EM3760 of LTE and ULP chip CC2540 through the serial port. The periphery circuit of the chip was designed, and μC/OS-II operating system was transplanted in the main control chip to realize data frame protocol conversion. The test result indicated that the gateway realized data protocol conversion between ULP and LTE and had satisfactory performance in practical applications in HDP well.
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