嵌入式Internet中TCP／IP协议栈的研究与设计

目前大多数嵌入式设备是8位或16位的MCU，要将Internet与嵌入式设备进行结合，其主要困难在于，相对于8／16位低速处理器本身资源的限制，Internet的TCP／IP协议簇过于复杂，因此不可能实现完整的TCP／IP协议栈，必须根据实际需求进行精简。针对8位或16位的低档MCU接入Internet，采用MCU＋软件嵌入TCP／IP协议的方法加以实现。对嵌入式Internet中TCP／IP协议栈的实现进行了研究与分析，针对每一层的具体协议，提出了设计方法和精简方案。由于嵌入式设备自身资源的限制，使得在嵌入式Internet中TCP／IP协议栈的实现存在功能简单、安全性不高等问题。但是随着嵌入式硬件设备和Internet技术的不断发展，嵌入式TCP／IP协议栈的实现也将会越来越完善。

Research on TCP/IP Protocol Stack in the Embedded Internet and its Design

Now there are lots of 8b or 16b MCU in the embedded system.When they access Internet,the very difficult thing is that TCP/IP protocol is so complex compared with the localization of resource of 8b or 16b low-speeded MCU.It is impossible to realize the integrated TCP/IP protocol stack,and must reduce it.Aiming at the 8b or 16b MCU to connect Internet,this paper introduced a methord:MCU+software TCP/IP protocol stack.In this paper,we researched and analyzed TCP/IP protocol stack in the embedded Internet.For every layer of TCP/IP protocol stack,we introduced a methord of design and a project of reduction.The realization of TCP/IP protocol in the imbedded Internet is imple function and low safety due to the localization of embedded equipments,but with the developments of embedded equipmetnts and Internet technology,it will be more perfect.