基于距离预测的移动自组网路由发现算法

提出了一种基于距离预测的扩展环路由发现方法,该方法通过提取历史记录中的长程信息和瞬时信息,通过加权修正之后,预测到目标节点的距离跳数,在此基础上,计算扩展环搜索的3个参数:起始TTL值、广播阈值和扩展步长,减少了路由发现的盲目性.仿真结果表明,与洪泛和传统扩展环搜索相比,该方法节省了路由开销,降低了分组的端到端时延,提高了网络性能.     

基于细胞适应机制的自组网多路径路由协议

针对一些ARAS(adaptive response by attractor selection)模型的噪声影响不明确和活跃度不能准确确定状态转换时机的缺点,建议了一个改进的ARAS模型。此模型利用被重新推导的吸引子明确了噪声对模型的随机影响。通过建议一个与当前路径状态和最好路径状态的差成反比的活跃度公式,经Matlab验证,改进模型可提高负载平衡的准确度。在一个基于AODV的多路径路由中,通过使用ARAS改进模型选择路由路径,提出一种基于细胞适应机制的多路径路由协议(MPAM),并在OPNET中验证了方法的有效性。     

移动自组网典型路由协议研究

随着网络的发展,移动自组网已成为当前研究的热点,文中介绍了移动自组网与现有通信系统在路由上的区别,重点探讨了移动自组网DSDV、AODV、DSR等几类典型的路由协议,以及MANET路由协议今后的主要研究方向。     

基于机会转发的飞行自组网集群路由算法

针对飞行自组织网络(Flying Ad Hoc Network, FANET)中高动态拓扑变化导致数据丢包率较高的问题,提出一种基于节点移动机会转发的集群路由算法CROF(Cluster Routing-Opportunity Forward)。该算法通过考虑节点相对移动趋势度和剩余能量的综合权值来统一对集群头节点以及集群间机会转发节点进行选择。仿真实验结果表明,CROF算法在高动态自组织网络中可以有效提高消息投递率以及网络生命周期。     

采用定向天线的移动自组网路由技术研究

定向天线能有效提升移动自组网路由协议DRP的性能。文章对移动自组网中引入定向天线的好处作了简要介绍,重点对其关键技术进行了归纳研究,最后对定向路由的研究现状进行了小结。     

基于GloMoSim的移动自组网路由仿真

全球移动信息系统仿真平台（CloMoSim）在移动自组织网络仿真中得到了广泛的应用,尤其是对网络路由以及MAC协议的建模支持。在对自组网路由方式特点及协议设计思路进行分析的基础上．结合典型的自组网路由算法策略,重点介绍了GloMoSim仿真环境的特点及其目前所支持的路由层协议。通过多次仿真验证,分析比较了这些路由协议的相关性能并得出结论。     

无线Mesh网络多路径路由协议的研究

L2MPM路由协议工作在第2层,属于多经路由中的备份路由,但并未考虑主路经与备份路径之间存在链路相交的问题,降低了网络的容错能力。因此,在L2MPM协议的基础上,提出了LD-L2MPM路由协议。该协议通过采用链路不相交策略,在Hello包中添加第一跳和最后一跳字段来确保所选的两条路径是链路不相交。仿真结果表明,与原有协议相比,数据包投递率提高约6%,平均端到端时延降低约5%。     

温室环境中的一种自组网路由算法研究

针对无线传感器网络中节点在温室场境中的自组网问题,文章介绍了一种自组网路由算法,每个节点都运行相同的程序。首先,上电后节点等待入网;然后,将入网信息上传至汇聚节点。节点的入网或退出,都是自动执行。在实验室环境下进行模拟实验,文章所讲述的算法可以应用于温室环境中。     

一种基于功耗考虑的自组网路由算法研究

对移动自组网中路由协议的负载均衡问题进行了分析与研究,并以区域路由协议(ZRP)为基础,引入负载均衡的思想,对主动式部分的路由策略进行了算法改进。仿真结果证明,该算法在对路由开销没有明显增加以及算法复杂度不变的情况下,使得网络节点的功耗性能得到了很大的改善与提升。     

Ad hoc网络及路由协议与研究

移动数据通信经历了如下的发展趋势：一是住原来以电话为主的蜂窝移动通信系统中增加传送数据的能力；另一个是即将投入商用的第三代移动通信系统。除此之外，就是移动Internet技术、无线Internet技术，包括移动IP、WAP、蓝牙技术，以及目前发展得如火如茶的无线局域网技术，这些正是移动计算技术所研究的主要总是。Ad hoc技术正是属于这个范畴，如图1所示。     

Weighted cooperative routing for wireless mobile Ad-hoc network

A novel weighted cooperative routing algorithm (WCRA) is proposed in this article, which was on the basis of a weighted metric with maximal remaining energy (MRE) of the relays and the maximal received SNR (MRS) of the nodes. Moreover, a cooperative routing protocol was implemented on the basis of WCRA. Then simulation is done on network simulation (NS-2) platform to compare the performances of MRS, MRE and WCRA with that of noncooperative destination-sequenced destination-sequenced distance-vector (DSDV) protocol. The simulative results show that WCRA obtains a performance tradeoff between MRE and MRS in terms of delivery ratio and network lifetime, which can effectively improve the network lifetime at an acceptable loss of delivery ratio.     

Location aided probabilistic broadcast algorithm for mobile Ad-hoc network routing

On-demand routing protocols are widely used in mobile Ad-hoc network (MANET). Flooding is an important dissemination scheme in routing discovering of on-demand routing protocol. However, in high-density MANET redundancy flooding packets lead to dramatic deterioration of the performance which calls broadcast storm problem (BSP). A location-aided probabilistic broadcast (LAPB) algorithm for routing in MANET is proposed to reduce the number of routing packets produced by flooding in this paper. In order to reduce the redundancy packets, only nodes in a specific area have the probability, computed by location information and neighbor knowledge, to propagate the routing packets. Simulation results demonstrate that the LAPB algorithm can reduce the packets and discovery delay (DD) in the routing discovery phase.     

Toward path reliability by using adaptive multi-path routing mechanism for multimedia service in mobile Ad-hoc network

Traditional multi-path routing mechanisms aim to establish complete node or link disjoint paths.However,under some circumstances if multiple paths cannot be established based on the current network topology,the traditional multi-path routing mechanism will degenerate into single path routing mechanism,thus the advantages of multi-path routing cannot be exhibited.To enhance the end-to-end path reliability,an adaptive multi-path routing mechanism with path segment is proposed,in which multi-path can be establ...     

Load-balanced broadcast routing in wireless Ad-hoc networks

In wireless Ad-hoc networks, where mobile hosts are powered by batteries, the entire network may be partitioned because of the drainage of a small set of batteries.Therefore, the crucial issue is to improve the energy efficiency, with an objective of balancing energy consumption.A greedy algorithm called weighted minimum spanning tree (WMST) has been proposed, in which time complexity is O(n2).This algorithm takes into account the initial energy of each node and energy consumption of each communication.Simulation has demonstrated that the performance of the proposed algorithm improves the load balance and prolongs the lifetime.     

移动Ad Hoc网络中基于Qos的多路径路由协议研究

针对现有移动Ad Hoc网在大流量业务下无法提供高质量QoS保障的问题,通过推导证明提出了路径长度限制的路径稳定的约束关系,进而将QoS的判定因子引入一种确定性的最优权值约束路由算法进行实例化,并在该路由算法的基础上提出了基于QoS保障的多路径路由协议(MP-QAODV).通过仿真,验证了MP-QAODV协议在平均端到端时延、端到端数据分组投递率、归一化路由开销等方面优于AODV和AOMDV协议.     

Graph partitioning algorithm for opportunistic routing in large-scale wireless network

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Rate allocation strategies for energy-efficient multipath routing in Ad-hoc networks towards B3G

Wireless mobile Ad-hoc network is a special network that all nodes can self-organize and work together. It is flexible to form a network and extend the coverage area dynamically without infrastructure, so Ad-hoc network is envisioned as cornerstones of future generation networking technologies (B3G or 4G). However, the dynamic network topology makes the communication cost not only the energy of source/destination nodes, but also the relay nodes. Another problem of the Ad-hoc network is it is hard to provide a stable and persistent quality of service (QoS), which is strongly required by the beyond 3rd generation (B3G) system. In this article, the authors establish a scenario that contains B3G cellular base station and Ad-hoc mobile nodes, and propose two algorithms minimum incremental rate algorithm and power feed-back rate allocation algorithm in multipath routing. The algorithms can maintain a constant total transmission rate and bit error ratio (BER) to provide the QoS guarantee and reach the minimum power consumption of the relay nodes by adjusting the rate of each path in the multipath routing.     

基于位置信息的移动P2P路由发现策略

由于EDSR路由协议在路由选择是采取向邻居节点全部转发路由信息的策略,在路由请求时,容易引起转发次数过多而导致网络瘫痪。本文提出借助LAR协议利用目的节点的位置信息设置路由的期望域,从而构建路由选择区域,提高发起路由请求时预知目的节点位置的几率,提出增强性LAR路由协议。当位置辅助路由协议发现路由失败时避免采用全网洪泛机制,采用基于距离的位置路由改进算法,设置距离更新门限来达到节点位置信息实时性与更新负载的平衡,通过路由选择权重值Qpath使路由选择达到最优。     

移动Ad hoc网络中AODV路由协议的研究与改进

针对移动Ad hoc网络AODV路由协议存在的一些缺点,提出了一个改进的路由协议。在改进方案中增加了备份路由和电池电量门阀值,可以有效避免路由的重新发现。性能分析与仿真结果表明,改进后的AODV路由协议更能适应网络拓扑结构的变化,并能在链路中断后迅速找到可用的路由。     

基于地理定位信息的移动自组网路由协议综述

移动自组网是自组网技术的重要应用领域,其关键技术在于路由协议的设计和选取.分析了移动自组网路由协议的基本设计原则和分类,总结了基于地理定位信息的移动自组网路由协议的发展现状和特点,指明了目前研究的热点方向.最后,对移动自组网的发展方向进行了展望.