The computation overhead of key algorithms in the prototype system is measured on heterogeneous devices , and then performance of the proposed certificate service is evaluated . these measured results verify availability of verifiable certificate service architecture 在不同硬件平台，对原型系统中的核心算法的运算代价进行了测试，分析了移动自组网证书服务的运算开销，结果验证了可鉴别的证书服务框架的有效性。
Table - driven routing protocols and source initialed on - demand routing algorithms are analyzed and compared against each other . our study shows the on - demand protocols are better suited for manet because they generate less control overhead and manage the mobility in a more efficient manner 首先叙述了两种移动自组网专用路由模式：表驱动路由方式和源启动按需路由方式，引用cmu的验证实验数据指出按需方式更适合于自组网。
It is an extreme challenge research subject for such network due to the dynamical topology change , bandwidth limitation and power constraint . the state - of - the - art of the manet technology in 5 layer : physical layer , mac layer protocols , routing protocols , transport protocol and application and middle ware issuses are summarized in this thesis . five typical routing protocols dsdv , dsr , tora , aodv and zrp are studied 本文介绍了移动自组网的起源、特征和当前的发展状况，并归纳了其主要的应用领域；分别从物理层、 mac层、路由层、传输层、中间件和应用层等5个层次分析和介绍了当前manet采用的技术和协议，尤其对路由协议( dsdv 、 dsr 、 tora 、 aodv和zrp )进行了详细的研究。
The implementation and analysis of manet are hard to achieve , while computer simulation seems to be viable . the characters of 3 popular network simulators opnet , glomosim and network simulator v2 , are introduced and compared . ns - 2 is a free and open source software , the simulation design method and procudure based on ns - 2 are summarized 本文介绍了计算机仿真的一般方法和过程，对当前流行的opnet 、 glomosim和ns - 2等3种网络仿真软件的特性进行了比较分析，并选用开放源代码的网络仿真软件ns - 2作为移动自组网仿真平台。
Based on collected and read literatures , this paper gives the analysis of its characteristics , architecture , security problem , qos problem , and comparison among present popular wireless ad hoc routing algorithm as well . 4 . according to the characteristics of wireless network situation of wearable computer , this paper comes up with a wireless network frame for wearable computer based on lsr ( link state routing protocol ) （ 4 ）结合可穿戴计算机无线网络环境的特点，在对自组网路由选择算法比较分析的基础上，提出了一种适用于可穿戴计算机无线网络的基于混合路由策略的lsr （ linkstateroutingprotocol ）路由协议的框架，它能够根据网络拓扑结构变化的不同程度在先应式和后应式路由策略之间进行自然平滑的切换。
We discuss the formation of the unidirectional links and their influence on the manet routing protocols such as dsr , dsdv , aodv . solutions are given to overcom e the problems , we analyze some of they and point out their limitations . in the third part , we show a new on - demand routing strategy supported unidirectional links , it use the two circuits route search algorithms to establish the route from the source node to the destination and backward with directions ; it transfer the route error messages from the backward positions to the forward positions one by one ; it apply the packet encapsulation technique to forward the packets through the unidirectional links and introduced the circuit path to transmit information from the forward node to the backward node 接着，指出在移动自组网环境中，单向链路的普遍存在，分析了它的产生原因、它对目前协议栈的影响；然后，我们给出了一种按需路由的自组网单向链路路由算法，它只有在需要路径的时候才维护路由，使用二循环路由寻径算法以建立节点间的路径，使用逐跳逆向传递的方式报告路由终断，使用封装广播的方式沿单向链路正向传输，使用报文封装方式支持单向链路下游节点向上游节点传递信息。
In this thesis , we evaluate 4 routing protocols , dsdv , dsr , tora and aodv for manet based on ns - 2 . performance of each routing protocols is evaluated with respect to fraction of packets delivered , end - to - end delay and routing load for given traffics and mobility models . both small size ( 20 nodes ) and medium size ( 50 nodes ) networks are used 本文基于ns - 2网络仿真器构建了小规模( 20节点)和中规模( 50节点)的移动自组网模型，设计了多种移动场景和流量场景，在给定场景的情况下对四种移动自组网路出算法( dsdv 、 dsr 、 tora 、 aodv )的成功分组抵达率、端到端延迟和路由开销三种指标进行了仿真分析和性能比较。
