移动自组网中Anycast路由协议的研究

讨论了Anycast通信协议模型和研究现状，提出一种基于AODV的Anycast路由协议用于移动自组网IP流通信．同时，在NS2模拟器中扩充了Anycast协议模块，并采用不同的网络参数测试了协议的性能．模拟结果显示，Anycast协议能有效平衡网络负载，减少包传输延时，增大网络吞吐能力．在节点移动性高且链路断裂频繁的情况下，Anycast服务也能提高移动自组网的性能．     

移动自组网络Anycast路由协议安全机制的研究

在分析了领域研究成果的基础上提出了一种新的移动自组网中Anycast路由协议安全机制,并基于该安全机制对DSR协议作了改进,最后给出进一步的研究方向.     

自组网QoS路由协议综述

自组网是一组带有无线收发装置的移动节点组成的一个多跳的临时性的自治系统。随着网络的发展和用户需求的不断提高,自组网的服务质量（QoS）问题已成为当前研究的热点。综述了自组网QoS路由协议研究方面的一些最新进展,并对该研究所提出的主要QoS路由协议进行分析、对比,有助于QoS路由协议的进一步研究。     

移动自组网AODV路由协议的设计与实现

针对目前移动自组网路由协议的研究,主要以NS2等网络仿真工具为实验手段的不足,本文详细介绍了在Linux平台上,使用无线网络接口,设计移动自组网AODV路由协议,为进一步研究移动自组网的相关性能,提供平台基础。     

无线自组网路由协议研究及OPNET实现

无线Ad hoc网络是一种由节点任意移动、拓扑结构动态、随机且快速变化的自组网。由于其复杂性和多棒性,常规路由无法传输信息。所以自组网路由协议一直是无线网络研究中的热点之一,目前大多数无线Ad hoc网络采用AODV或DSR路由协议。对这两种路由协议在不同网络环境下的性能进行了进行比较,分析。并对AODV协议进行改进,仿真结果表明,改进的AODV路由协议增加了无线Ad hoc网络的吞吐量,降低了延时和路由开销,从而有效地提供了网络性能。     

移动自组网多路径QoS路由协议

多路径路由能有效地增加网络的吞吐量以及平衡网络负载,结合移动自组网特点,提出了一种适合移动自组网的多路径QoS路由协议,该协议使用“软状态”方式进行资源预留,并在路由维护过程中使用了局部重构技术,有效地降低了协议的路由开销。模拟结果进一步表明,在动态的网络环境下,该多路径QoS协议能够有效地实现网络负载均衡,提高网络资源利用率,为移动自组网提供可靠而高效的传输性能。     

无线自组网按需路由协议比较研究

Ad Hoc网络是一种移动自组织多跳网络.路由协议是移动节点互相通信的基础,因此成为当前自组网体系结构中的研究热点.本文介绍被多数无线自组网所采用的按需路由协议DSR和AODV,并仿真分析了两种协议的网络性能和各自特点.     

IPv6中一种改善的Anycast路由协议在移动IP网络中的设计与实现

IPv6具有两个新特性,一个是Anycast服务,另一个是移动IP服务.这两种服务具有广泛的应用前景.在现有移动IP网络的Anycast路由协议基础之上提出了一种改善的Anycast路由方案,通过此路由方案,位于外网的移动节点可以获取高质量的Anycast服务.本方案不仅缩短了移动节点获取Anycast服务的延迟时间,同时也大大节省了网络带宽资源.深入分析和讨论该方案的可行性,并通过在IPv6模拟环境下的实验结果论证此方案的有效性以及可靠性.     

移动自组网中一种面向群组移动性的位置服务协议

基于位置信息的路由协议被广泛认为是一种可扩展的移动自组网路由解决方案.大多数此类协议假定可通过位置服务协议获取结点的位置信息.研究人员现已提出多种位置服务协议.但是,它们在大规模网络环境中的可扩展性不好,或者在高动态网络环境中可靠性不高.本文提出了一种适用于大规模移动自组网的面向群组移动性的可扩展及可靠的位置服务协议.模拟结果表明此协议比SLURP协议更适合于具有群组移动性的大规模移动自组网.     

基于节点度的移动自组网络Grover路由算法研究

移动自组网络是当前无线网络研究的热点问题,网络路由算法研究是其中的一个关键问题.在深入分析现有移动自组网络路由协议基础上,本文结合动态源路由协议的特点,提出了一种基于节点度值计算的Grover路由算法.该方法系统地研究移动自组网络的主要特征:节点度值、节点能量等,利用Grover搜索算法构造操作矩阵和概率扩散矩阵计算得...     

移动自组网中泛播技术研究综述

对于无线移动自组网络中有限的带宽和能量资源，泛播技术可以带来更好的通信健壮性和可靠性。本文阐述了移动自组网络和泛播技术基本概念，分析和总结了移动自组网络中泛播技术在网络层，媒体访问层，应用层中的研究现状，并且讨论了泛播技术的应用背景。     

移动自组网络中一种有效的选播路由协议

移动自组网是一种特殊的无线移动通信网络，它由一系列带有无线收发装置的动态节点临时形成一个多跳的自治系统，因此传统网络中的路由协议不适合于移动自组网络．选播作为一类新的通信协议，能有效平衡网络负载分布和提高网络性能．本文首先描述了移动自组网络的特点及该环境下的路由协议，在此基础上提出了一种有效的选播路由协议．通过平均分组传送成功概率和平均控制字节数指标的测试表明了算法的有效性．     

A qualitative comparison evaluation of the greedy forwarding strategies in Mobile Ad Hoc Network

The Mobile Ad Hoc Network (MANET) is wireless network which provides communication among wireless mobile hosts without the need of any standing network infrastructure. In such networks, and to facilitate communication between participating nodes, every node has to offer routing services. Routing in MANET is responsible for selecting and forwarding packets along optimal paths. Finding an optimal route is a crucial task in MANET where routes tend to be multi-hop. Many routing protocols have been proposed in literature. However, few of them are efficient when the network is sparse and highly dynamic. Position-based routing and forwarding provides the opportunity for improving the efficiency and performance of the existing MANET routing strategies. This research work presents an extensive overview of geographic forwarding techniques in MANET. In particular, it focuses on the presentation of the basic operation mode of geographic forwarding, which is greedy forwarding. Meanwhile, this research work presents a qualitative evaluation of the most current and popular greedy forwarding strategies used with position based routing protocols. Furthermore, the findings have been used to conclude the most appropriate unicast forwarding policy for future research efforts.     

A weight-value algorithm for finding connected dominating sets in a MANET

In recent years, mobile devices are becoming popular and high-speed wireless communication is uproaring. In a wireless network environment, a mobile ad hoc network (MANET) has the characteristics of being infrastructure-free and self-organizing. Although the topology of MANET can be deployed easily with few restrictions, the maintenance faces great challenges. Furthermore, all nodes transmit packets by multi-hop in MANET. If transmission is by traditional broadcasting, it has a broadcasting storm problem and it can significantly reduce the wireless network throughput. The CDS (Connected Dominating Set) scheme is a well-known solution to the broadcasting storm problem. In a MANET, a virtual backbone network can be constructed by using CDS. All nodes can transmit data effectively through the virtual backbone network. In previous research on the subject, most algorithms are only suitable for a static MANET environment, with all nodes being stationary. This is contrary to the desirable characteristics of MANET. In this paper, we present an algorithm which is suitable for both static and dynamic MANET environments.     

移动自组网络安全声誉机制的研究

移动自组网是一种特殊的无线移动通信网络，不依赖于存在的固定设施，网络结构具有快速展开、自治、多跳等特性，广泛应用在战场、救灾等需要临时、移动网络的特殊场合。移动自组网络除了要达到传统有线网络中的安全目标外，还有自身特殊的安全需求，而它的特性又使之容易遭受各种攻击。预防和侦测技术在移动自组网安全中已得到广泛的研究，而声誉机制是其中最主要的侦测技术之一。在全面分析了声誉机制在移动自组网的应用后，提出了一种新的安全声誉机制。     

An Improved Multi-Objective Particle Swarm Optimization Routing on MANET

A Mobile Ad hoc Network (MANET) is a group of low-power consumption of wireless mobile nodes that configure a wireless network without the assistance of any existing infrastructure/centralized organization. The primary aim of MANETs is to extend flexibility into the self-directed, mobile, and wireless domain, in which a cluster of autonomous nodes forms a MANET routing system. An Intrusion Detection System (IDS) is a tool that examines a network for malicious behavior/policy violations. A network monitoring system is often used to report/gather any suspicious attacks/violations. An IDS is a software program or hardware system that monitors network/security traffic for malicious attacks, sending out alerts whenever it detects malicious nodes. The impact of Dynamic Source Routing (DSR) in MANETs challenging blackhole attack is investigated in this research article. The Cluster Trust Adaptive Acknowledgement (CTAA) method is used to identify unauthorised and malfunctioning nodes in a MANET environment. MANET system is active and provides successful delivery of a data packet, which implements Kalman Filters (KF) to anticipate node trustworthiness. Furthermore, KF is used to eliminate synchronisation errors that arise during the sending and receiving data. In order to provide an energy-efficient solution and to minimize network traffic, route optimization in MANET by using Multi-Objective Particle Swarm Optimization (MOPSO) technique to determine the optimal number of clustered MANET along with energy dissipation in nodes. According to the research findings, the proposed CTAA-MPSO achieves a Packet Delivery Ratio (PDR) of 3.3%. In MANET, the PDR of CTAA-MPSO improves CTAA-PSO by 3.5% at 30% malware.     

基于中国余数定理的移动自组网签名方案

作为一种新型的无线移动网络,移动自组网（mobile ad hoc network,MANET）的安全是现在主要的研究方向。MANET网络不同于传统的网络,因此需要一些新的安全机制。文章简要介绍了MANET网络体系结构特点所面临的问题和需要达到的安全目标,提出了一种基于中国余数定理的分布式门限签名方案,该方案与MANET的特性非常一致。文章还给出了一个采用RSA公钥系统的数字签名算法。分析表明,这种方案具有较好的计算性能。     

基于遗传算法的移动自组网路由优化

对移动自组网的拓扑结构进行分析,建立其路由网络模型．将遗传算法的基本原理和移动自组 网的路由模型结合起来,提出了一种求解无线网络最优路径的算法．该方法采用可变长度染色体编码,利用 遗传算法优化路由,可以在满足系统开销最小的约束条件下寻找到最优路径．     

Cost-effective mobile ad hoc networks management

As there are more and more mobile devices in use, different mobile networking models such as ad hoc or mesh are attracting a large research interest. Self-organizing mobile ad hoc networks (MANET) allow devices to share their services and resources without any central administration or Internet support. In this respect they can become the backbone of the wireless grid or the gateway to existing grids. To achieve these goals, MANET management must be as effective as that of wired networks. This is, however, a challenging task due to network features like mobility, heterogeneity, limited resources of hosts and feeble communication. This paper presents a set of simple, cost-effective and resilient procedures for the basic tasks of MANET creation and management.