The research work in this dissertation carries a deep study on new techniques of prn and put emphasis on the multiple access protocol to support the integration of smart antennas with prn . the major achievements are outlined as follow 近年来，诸多新的应用对分组无线网的研究和发展不断提出新的挑战；另一方面，通信和微电子技术的迅速发展又为分组无线网的发展创造了良好的契机。
Packet radio network ( prnet ) attracts a great attention in military domain because of its self - organizing and self - recovering capability . as a major means of military communication , prnet possesses some advantages that other communication means doses not have 分组无线网以其自组织、自恢复能力在军事上得到极大的关注，作为战场上的主要通信手段之一，分组无线网正发挥着其他通信方式无法媲美的优势。
Packet radio network ( prn ) has been widely used due to its own intrinsic advantages . with the rapid growth of internet over the world , it is an inevitable trend to conduct the research on the interconnection between the prn and internet 分组无线网以其自身的优势得到了广泛的应用，随着internet在世界范围的迅速普及，以分组无线网的方式来支持internet上的信息传输就成为一种不可避免的趋势，本文首先介绍了分组无线网网络结构，子网节点和网关节点的构成及功能。
Firstly , the structure and function of prn , subnet node and gate node was outlined , and the hardware component of prn - node - controller was introduced in detail with emphasis on the design of prn - node - controller with the interface of pcmcia . secondly , the hardware and software platform of the driver for prn - node - controller was presented . the important dispatched of the driver was explained in details , which complete the interconnection between the prn and internet 接着分析了分组无线网节点控制器驱动程序的功能、结构和软硬件平台，详细说明了分组无线网节点控制器驱动程序的各个例程，实现了分组无线网节点控制器驱动软件的设计，使分组无线网的网络协议与标准的tcp ip高层协议相连，实现了分组无线网与internet的互联。
According to the mil - std - 188 - 220b protocol of american army , data packets can be relayed and forwarded automatically by nodes in network . the network can detect the change of topology in internal system and assure the information to be sent to the destination node in connective network . furthermore , it comprises of the radio data transmitting network for some equipments such as tactical data terminal and computer so on 本质上，它属于无中心的自组织分组无线网，按照美军战术互联网“数字消息传输设备子系统互操作标准” ( mil - std - 188 - 220b协议) ，通过节点对数据分组的自动中继转发，使网络能够自动探测到系统内部拓扑结构发生的变化，保证信息能达到网络中所有连通的节点，为战术数据终端和计算机等设备提供无线数据传输网络。
Recent progress in internet and mobile communication has attracted much attention . packet radio network ( prn ) can expand internet service to mobile environment successfully , it also plays an important role in military and commercial communication areas and is interpreted as an integral part of future ' s personal communication systems Internet和移动通信是近年来通信领域应用与研究的热点，分组无线网是实现将internet业务扩展到无线移动环境的理想形式，长期以来一直在军用和商用领域发挥着重要作用，被看作未来个人通信系统的重要组成部分。
The network performance of the mac protocol was evaluated and the influence of different network timing model parameters and simulation parameters on network performance were discussed . the paper provided an reference for grasping the principle of mac for 220b protocol and the application of prnet in military communication and emergency communication 通过对仿真结果的分析，评估了该协议的网络性能，并讨论了不同的定时模型参数和仿真参数对网络性能的影响。为掌握220b的mac工作原理，以及分组无线网在军事通信和应急通信场合的应用提供了的参考。
