基于TDMA的战场无线传感器网络节点低功耗通信协议实现

 为迎接新军事变革下的信息化战争，武器系统平台网络化已成为网络中心战（NCW）的发展趋势，战场无线传感器网络已受到世界各军事强国的重视。时分多址（TDMA）技术将无线信道按时隙分配给不同用户，因其可靠性和稳定性在无线通信领域得到广泛应用。针对战场无线传感器网络通信协议低开销低功耗的要求，分析了TDMA通信协议的原理和实现的难点，结合单片机MSP430F449和无线收发芯片CC2500设计并实现了一种适合战场应用环境的低功耗TDMA通信协议，详细介绍了战场无线传感器网络节点平台的组成和低功耗通信协议软件实现。经过实验验证，该协议运行可靠，扩展性、灵活性好，代码量小，在无数据收发时处于低功耗模式，适合各种低功耗的无线传感器网络应用。

Implementation of Low-Power Communication Protocol Based on TDMA for Battlefield Wireless Sensor Network Nodes

To meet the needs of information warfare for the Revolution in Military Affairs(RMA), networked weapon system platforms become a development trend of Network Centric Warfare (NCW). The battlefield wireless sensor networks have attracted much attention of the world's military powers. Time Division Multiple Access (TDMA) technology allows several users to share the same frequency channel by dividing the signal into different time slots, and it is widely used in the wireless communication for its reliability and stability. Considering the lightweight and low-power requirements of the communication protocol for battlefield wireless sensor networks, the principles and difficulties in the applications of TDMA communication protocol are analyzed in the aspects of hardware and software separately. A low-power TDMA communication protocol for battlefield environments is designed and implemented with MSP430F449 mixed signal microcontroller and CC2500 low-cost 2.4GHz RF transceiver. The battlefield wireless sensor network nodes platform and the implementation of the low-power communication protocol are discussed in detail. The experimental results have verified the reliability, scalability and flexibility of the protocol. Also, it is shown to require a small amount of codes and to stay in a low-power state when there is no wireless communication data. Thus, it is suitable for various low-power wireless sensor network applications.