嵌入式系统中低速组网协议的研究与设计

Study and Design of Low Speed Network Protocol in Embedded System

针对应用于嵌入式系统的低速无线网络开发出一种工作于MAC层的基于信道切换的冲突避免协议(CSMA/CD-SC)。为基于嵌入式系统的某型手持式信息支持设备提供了点对点与点对多点的无线链路协议。围绕嵌入式系统与低速网络提供的单一信道半双工通信这一特殊环境,在碰撞避免、死锁解除、功率控制等方面做了针对性设计,并提出了相应的扩容方案。经仿真及实验表明,该协议能够用较少的开销满足高突发性网络通信的需求。

With focus on the low speed wireless network applied to the embedded system, a conflict mitigation protocol base on the channel-switching （CSMA/CD-SC）is proposed which works on the MAC scheduling. It can provide point-to-point and point-to-muhipoint WSN protocol for a type of handle information support equipment. As the center for the especial setting of single half-duplex channel provided by embedded system and low speed net- work, provide pertinent design on collision detecting, deadlock breaking , power control. Simulation and experi- ment show that this protocol is capable of working under a strong burst traffic network communication with lesser cost.