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基于LLC的嵌入式局域网协议栈设计 被引量：3

Design of embedded LAN stack based on LLC
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摘要 分析了基于TCP/IP格式封装的通讯协议中存在的大量无意义字段和冗余信息以及不适合嵌入式局域网中实时通信需求的现状,研究了IEEE802.2逻辑链路控制(logic link control,LLC)协议,设计了一种新型的基于LLC的嵌入式协议栈。该协议栈缩短了报文封装长度,增加了包确认机制并压缩了处理层次,从而提高了系统的实时性和发送效率。该协议栈为底层的各种通讯方式提供统一API,并对以太网、串口的数据转换提供了结构支持。在对节点可信性做出评估的基础上,提出了事前评估机制、内存使用限制等措施,有效地利用了可信信息,并提高了系统的稳定性。 Across the characteristic of communication in embedded local area network and the needs of many typical applications based on this,the shortage of stacks based on TCP/IP is analyzed.A new stack based on IEEE802.2 LLC is designed and modified as the replacer of TCP/IP in LAN.Firstly,both the real-time performance and transmission efficiency is improved.Secondly,the packagebased ACK mechanism is put forward.Then,a uniform set of user API for physical layer mediums is defined and a structure support for data conversion like Ethernet to/from RS232 is provided.Finally,to enhance the trust and the dependability of the system,DoS defending and process memory restriction are introduced.
作者 宋波 贾智平 李新
机构地区 山东大学计算机科学与技术学院
出处 《计算机工程与设计》 CSCD 北大核心 2010年第23期4939-4943,共5页 Computer Engineering and Design
基金 国家自然科学基金项目(NSFC90718032)
关键词 嵌入式系统 TCP/IP 逻辑链路控制协议 网关 安全 embedded system TCP/IP LLC protocol gateway secure
分类号 TP393 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献10

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二级参考文献12

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共引文献7

同被引文献39

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引证文献3

二级引证文献4

计算机工程与设计
2010年 第23期

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