QoS Aware Trust Based Routing Algorithm for Wireless Sensor Networks

Wireless Personal Communications - In Wireless Sensor Network (WSN), the lifetime optimization based on minimal energy consumption and security are the crucial issues for the effective design of...     

Autonomous Ant-based Public Key Authentication Mechanism for Mobile Ad-hoc Networks

In mobile ad-hoc networks (MANETs), where there is no centralized authority to provide authentication, trust and reputation mechanisms are applied to maintain security by identifying trustworthy and untrustworthy nodes. However, traditional authentication mechanisms are not viable for MANETs due to the lack of infrastructure and frequent topology changes. In this paper, we propose a self-organized and localized public key authentication mechanism based on ant colony systems. Every node generates its own public-private key pair, issues certificates to neighboring nodes and provides on-demand authentication services by means of gathering certificate chains towards a target node. Pheromone concentration left by ants along the path of the certificate chains represents the trust level of a node towards other nodes. This model is able to authenticate public keys by selecting the most trustworthy certificate chains gathered by ants and can identify and exclude certificate chains with malicious nodes.     

一种具有能量感知的多路径Ad hoc路由算法

该文针对无线移动Ad hoc网络的动态变化拓扑逻辑,存在单向链路,节点能量有限等特点,提出了一种具有能量感知的多路径路由算法。该算法是一种反应式的基于路径池的多路径路由算法,数据和应答消息的路由根据路由池中路径的性能尺度,即跳数、可靠性和剩余能量以一定的概率分布随机选择。路径的可靠性和剩余能量在数据传输过程中动态更新。仿真结果表明该算法能有效地延长网络的生存时间。     

移动Ad Hoc网络中一种基于多路径路由协议的QoS保障算法

移动Ad Hoc网络快速发展的同时,其中的服务质量(QoS)保障问题也日渐突出.设计了一种适用于移动AdHoc网络中多路径路由协议的路径选择和带宽分配算法,选择适合业务传输的路径,并合理分配带宽,实现QoS保障.计算机仿真表明,该算法能够适应移动Ad Hoc网络的动态性、不稳定性,有效地实现QoS保障,改善网络整体性能.     

基于Grover搜索算法的MANET网络路由协议

In Mobile Ad-hoc Networks (MA-NETs), routing protocols directly affect various indices of network Quality of Service (QoS), so they play an important role in network performance. To address the drawbacks associated with traditional routing protocols in MANETs, such as poor anti-fading perfor-mance and slow convergence rate, for basic Dynamic Source Routing (DSR), we propose a new routing model based on Grover’s sear-ching algorithm. With this new routing model, each node maintains a node vector function, and all the nodes can obtain a node probability vector using Grover’s algorithm, and then select an optimal routing according to node probability. Simulation results show that compared with DSR, this new routing protocol can effectively extend the network lifetime, as well as reduce the network delay and the number of routing hops. It can also significantly improve the anti-jamming capa-bility of the network.     

一种基于蚁群优化的多媒体传感器网络服务感知路由算法

本文针对多媒体传感器网络中三类基本服务:异常事件告警服务、信息查询服务以及流媒体查询服务,分析了不同服务的QoS需求,并抽象出多媒体传感器网络QoS路由模型.进而,利用改进的蚁群算法,设计了一个基于蚁群优化的服务感知路由算法ASAR (Ant-colony optimization based Service Aware Routing).本文设计服务感知的路由协议,旨在依据各类媒体数据包不同的QoS需求,选择相应的路由以合理利用全网资源、提高网络性能.最后,我们通过NS2仿真表明了较其他路由算法,本文提出的方法能够为多媒体传感器网络的多种服务提供更好的QoS保障,同时,比传统的蚁群算法具有更好的收敛性.     

移动自组网络中多径路由的匿名安全

多路径为移动自组网络提供的容错、负载均衡与QoS支持较单路径更有效可行,所以在战术无线自组网等类似系统中采用多径路由策略更能满足系统的实际需求.另外,这类系统对安全性的要求除了基本的通信内容机密、完整与可用等特性外,还要求通信者的身份与位置对敌人保密,为通信者及其使命提供保护.鉴于现有的移动自组网络的匿名路由协议都不是实用的多径路由协议,且未能有效防御被动攻击、拜占庭行为以及匿名的不充分性,本文设计了一种新型安全匿名的多径路由协议,其特点是:在移动自组网络中采用单私钥多公钥密码体制、Bloom Filter与轻型洋葱盲化算法,来实现通信者身份匿名、位置隐藏与路由不可追踪;为源节点提供充分的路由信息,基于充分的信息使用强化学习算法来提高系统抵御被动攻击与拜占庭攻击等路由安全攻击的能力,并增强数据传输的可靠性.通过仿真与分析,显示了算法有较好的性能并达到了所定义的匿名安全要求.     

无线 Mesh 网络中多路径路由算法的研究

针对无线 Mesh 网络中传统单径路由协议的不足,提出一种基于动态源路由协议(DSR)的多路径路由算法(IDSR).该算法通过在路由发现过程引入带宽和最大转发次数等限制条件,保证了多条路由请求信息的获取;通过在节点不相交的多径选择过程中引入多 QoS 路由代价函数,有效地实现多路径的选择;通过提供多 QoS 保障,使算法具有较高的求解效率,避免了单径路由的不稳定等特点.实验结果表明,IDSR 算法在无线 Mesh 网络的路由中具有更好的 QoS 性能.     

具有能量和位置意识基于ACO的WSN路由算法

通过融合传感器节点的剩余能量和地理位置信息,设计一种具有传感器节点能量和地理位置意识的基于蚁群优化方法的无线传感器网络路由算法(ELACO);针对路由空洞现象,提出一种路由回退机制,提高了路由搜索成功率.仿真结果表明,ELACO算法具有很高的路由查寻成功率,能够更好地均衡传感器节点能量消耗,从而延长网络使用寿命.     

一种高效的编码感知路由算法设计

针对现有的网络编码路由技术中存在的组合优化性能较差,如计算开销较大、数据交互复杂以及路由构建周期较长等问题,以遗传算法为理论基础,提出了一种改进的网络编码感知路由算法.该算法利用遗传算法的高效组合优化功能,重新构造了其网络编码感知路由的染色体表达、适应度函数以及遗传操作等,并添加了一种修复模块.实验结果表明,该算法与同类型的网络编码路由算法相比,其平均路由构造时间较短、网络吞吐量大,展现出较强的组合优化性能,并具有强优化的寻址能力.     

QoS Routing Algorithm with Multi-Dimensions for Overlay Networks

Overlay networks have emerged as a useful approach to providing a general framework for new applications and services that are to be implemented without significantly changing the IP-layer network infrastructure. Overlay routing has been used as an alternative to the default best effort Internet routing for the absence of end-to-end Quality of Service （QoS）. While the former has recently been in- vestigated, the conflict of QoS restraints and resource optimization remains unsolved. Re- cent studies have shown that overlay paths can give better latency, loss rate and TCP throu- ghput. In this paper, a multi-dimensional QoS objective model based on the analysis of mul- tiple QoS constraints has been presented, and a routing algorithm to optimise the overlay re- source of its nodes and links is then proposed. In fact, the algorithm obtained multiple QoS values using probability theory to achieve the ro- uting according to the multi-dimensional QoS objective vector of the QoS objective model. Simulation results reveals that the algorithm works better than other existing algorithms in balancing the network resources, and applications with stringent QoS requirements could be run.     

移动Ad hoc网络的QoS路由实现机制

随着实时多媒体业务向移动Adhoc网络的引入,如何为移动Adhoc网络提供服务质量保证成为当前研究的热点。本文介绍了为移动Adhoc网络提供QoS路由的三种实现机制:MAC层的TDMA资源管理、普通的QoS测量、CDMA的不同传输之间的冲突避免。     

Mobility Aware Quality Enhanced Cluster Based Routing Protocol for Mobile Ad-Hoc Networks Using Hybrid Optimization Algorithm

Wireless Personal Communications - Wireless Sensor Networks (WSN) utilizes more nodes to forward messages and information from source node to destination node and these nodes are battery-powered...     

一种能量感知的Ad Hoc网络路由协议

Ad Hoc网络中的节点是由电池供电,整个网络是一个能量受限系统,如何节省节点的能量,尽可能延长网络的可操控时间逐渐成为衡量路由协议性能的重要指标.基于移动节点能量的不同级别,采取不同的转发策略,提出了一种基于能量感知的Ad Hoc网络路由协议--EARP.并与AODV协议进行了性能比较,仿真结果显示,EARP具有较低的能耗,较长的网络存活时间.     

移动Ad hoc网络可靠多路径路由协议的综述

分析研究了移动Adhoc网络（MANET）的可靠多路径路由协议,可靠多路径路由协议的主要目标是提供可靠的通信、以确保负载平衡以及提高服务质量（QoS）。本文分析了Adhoc网络多路径路由技术的研究进展,论述了典型的Adhoc网络多路径路由协议性能,最后对Adhoc网络多路径路由的发展趋势进行了展望。     

移动自组织网络中能源信息熵的需求多路径路由协议(英文)

This paper provides a critical review of energy entropy theory in Mobile Ad Hoc Networks (MANETs) and proposes an Energy Entropy on Ad Hoc On-demand Distance Vector Multipath (EEAODVM) routing protocol. The essential idea of the protocol is to find every route which can minimize the node residual energy in the process of selecting path. It balances individual node battery energy utilization and hence prolongs the entire network lifetime. The results of simulation show that, with the proposed EEAODVM routing...     

A Highly Secured QoS Aware Routing Algorithm for Software Defined Vehicle Ad-Hoc Networks Using Optimal Trust Management Scheme

Wireless Personal Communications - Recent reports show that the millions of people killed each year in the road accidents are due to high density vehicles and traffic environment. The road traffic...     

DLSA: Delay and Link Stability Aware Routing Protocol for Flying Ad-hoc Networks (FANETs)

Flying Ad-hoc Network (FANET) is a new class of Mobile Ad-hoc Network in which the nodes move in three-dimensional (3-D) ways in the air simultaneously. These nodes are known as Unmanned Aerial Vehicles (UAVs) that are operated live remotely or by the pre-defined mechanism which involves no human personnel. Due to the high mobility of nodes and dynamic topology, link stability is a research challenge in FANET. From this viewpoint, recent research has focused on link stability with the highest threshold value by maximizing Packet Delivery Ratio and minimizing End-to-End Delay. In this paper, a hybrid scheme named Delay and Link Stability Aware (DLSA) routing scheme has been proposed with the contrast of Distributed Priority Tree-based Routing and Link Stability Estimation-based Routing FANET’s existing routing schemes. Unlike existing schemes, the proposed scheme possesses the features of collaborative data forwarding and link stability. The simulation results have shown the improved performance of the proposed DLSA routing protocol in contrast to the selected existing ones DPTR and LEPR in terms of E2ED, PDR, Network Lifetime, and Transmission Loss. The Average E2ED in milliseconds of DLSA was measured 0.457 while DPTR was 1.492 and LEPR was 1.006. Similarly, the Average PDR in %age of DLSA measured 3.106 while DPTR was 2.303 and LEPR was 0.682. The average Network Lifetime of DLSA measured 62.141 while DPTR was 23.026 and LEPR was 27.298. At finally, the Average Transmission Loss in dBm of DLSA measured 0.975 while DPTR was 1.053 and LEPR was 1.227.

     

无线自组织网络中一种拥塞意识的多径路由算法

提出了无线自组织网络中一种拥塞意识的多径路由算法。该算法在路由发现过程中,综合节点的队列长度和路径跳数来动态确定路由请求消息的转发概率,可以在保证路由请求消息有一定送达率的条件下,降低路由开销;在路径选择和流量分配过程中,综合考虑节点的队列长度和路径质量作为路由度量,发现流量高吞吐量低拥塞路径,并基于该度量值进行流量分配。仿真结果显示,所提出的多径路由算法能有效提高网络性能。