8位机嵌入式TCP通信速度的研究  

Research on communication speed with TCP protocol for embedded system based on 8-bit single chip microcomputer

作　　者：金小明[1] 李英姿[1] 钱建强[1] 李华[1] 

机构地区：[1]北京航空航天大学理学院,北京100083

出　　处：《电子测量技术》2007年第7期67-70,共4页Electronic Measurement Technology

摘　　要：TCP协议是TCP/IP协议簇的核心协议,也是TCP/IP协议簇中最复杂的协议。基于8位机的嵌入式TCP协议以太网通信已经有很多的范例,,但其实际的传输率远小于10M以太网的传输速率。针对此问题,本文在已有的8位机TCP协议以太网通信的硬件基础上,应用网络监听软件Sniffer,监听TCP通信过程的数据包,分析TCP协议通信过程,并对其具体的时间消耗过程作了定量的分析,找出了其传输速率不高的关键,在此基础上,研究出一种提高系统性能、提高传输效率、同时又相对降低网络负担的新方案,实践明效果良好。TCP protocol is the key protocol of the TCP/IP protocols and the most important and complicated protocol of them. There are many applications of communication system with TCP protocol based on 8-bit Single Chip Microcomputer now, but the speed of those applications is far less than 10 M/s. In this paper, based on the current hardware, the transmitted packets which are monitored by net-monitor software Sniffer is introduced, and the reason of its low speed is presented by analyzing the time-consuming of the material process of the TCP communication. At the same time, a resolved scheme for high-speed small quantity of data system with TCP protocol based on embedded system,with which to improve the utilizing rate of the system and the translation speed of data, and correspondingly decease the spending of net , is also presented , and the benefit of it is obvious in practice.

关 键 词：8位单片机 TCP/IP协议簇 SNIFFER NAGLE算法 TCP包 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]