数字无中心系统数据链路层的设计与实现  

Design and realization of data link layer in digital land mobile communication system without centre controller

作　　者：薛鸿媛[1] 谢晓明[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《计算机工程与设计》2008年第18期4654-4657,共4页Computer Engineering and Design

摘　　要：在通信系统全面数字化的趋势下,专网通信的全面数字化已经迫在眉睫。对欧洲电信标准化协会的DPMR协议标准进行了全面研究,简要介绍了数字无中心多信道选址移动通信的原理。以Visual C++为平台,设计并实现了一套适合900MHz无中心系统的数据链路层协议模型,详细阐述了模型中分组数据交换及用户地址码映射的设计思路和实现过程。设计模块已经成功嵌入实验室数字对讲机系统中,运行效果良好,充分证明了模块的可行性。Under the tendency to communication system being digitized overall, it is apparently that general digital in the special-communication is overwhelming. Considering the DPMR （peer-to-peer digital private mobile radio） protocol standard of ETSI, the theory ofland mobile communication system requirements using multi-channel access techniques without central controller is introduced. Based on the Visual C＋＋ platform, a new data link layer protocol model which is suitable for the 900 MHz land mobile communication system is designed. Then the design schemes and implementation processes of the data packet exchanges and the user calling address mapping are described in detail. It is embedded in the system of the lab＇s walkie-talkie, which has been well implemented. Its feasibility is proved in experiment.

关 键 词：数字无中心 移动通信 数据链路 帧传输 地址映射 

分 类 号：TN929.5[电子电信—通信与信息系统]