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。     

基于Ad hoc网络的QoS路由问题研究

由于Adhoc网络的特殊性,传统的路由协议不能直接应用到Adhoc网络中。因此有必要对Adhoc网络QoS路由协议发展现状进行探究。本文介绍了Adhoc网络QoS路由的概况和它存在的主要问题,以及应对的策略,这有助于进一步改进和完善Adhoc网络的QoS路由技术。     

Ad hoc网络路由协议FSR研究

Adhoc网络是一种新颖的移动计算机网络,既可以作为一种独立的网络运行,也可以作为当前固定设施网络的一种补充形式。根据Adhoc网络的特点,分析了目前路由协议设计思想,通过对Adhoc网络路由协议FSR(FisheyeStateRouting)的研究,提出了FSR路由交换方案,同时对FSR协议的操作及路由精确度进行了仿真分析。     

模块化电源间通信的Ad hoc网络

分布式逆变电源系统是电力系统的发展方向之一。模块间的通信是为了使分布式电源系统中并联的多个逆变电源模块彼此协调工作。Adhoc网络技术适应分布式逆变电源系统结构特点,可以方便逆变电源模块间通信的实现。针对用于逆变电源模块间通信的Adhoc网络,分析了Adhoc网络的特点和常用的路由协议,改进Adhoc网络中已有的CBRP路由协议,并提出一种新的MCBRP路由协议。     

Ad hoc网络技术讲座第1讲 Ad hoc网络的体系结构和信道接入协议

本文首先介绍Adhoc网络的概貌,然后分析Adhoc网络的体系结构。在介绍了信道接入协议的地位和作用后,对Adhoc网络特有的信道共享方式、隐终端和暴露终端问题进行了介绍和分析。文章把Adhoc网络的信道接入协议划分成基于单信道、双信道和多信道三类,最后给出了Adhoc网络信道接入协议的发展动向。     

FSR网络路由协议研究

Adhoc网络是一种新颖的移动计算机网络 ,它既可以作为一种独立的网络运行 ,也可以作为当前具有固定设施网络的一种补充形式。根据Adhoc网络的特点 ,分析了目前路由协议设计思想 ,通过对Adhoc网络路由协议FSR(FisheyeStateRouting)的研究 ,提出了FSR路由交换方案 ,同时对FSR协议的操作及路由精确度进行了分析。     

Ad hoc网络中MAC协议的研究

Adhoc网络中的MAC协议是一个比较复杂的问题。本文首先分析了Adhoc网络中实施MAC协议的各种困难,然后详细讨论了隐终端和暴露终端问题。最后比较分析了目前提出的几种Adhoc环境下的MAC协议并给出了结论。     

一种改进型Ad hoc网络安全路由协议

移动Adhoc网络的自组织、动态拓扑以及无线接入等特点使路由的安全性问题日益突出,而现有的Adhoc网络路由协议并没有提供安全的保护机制。论文首先论述了Adhoc网络几种常见的按需安全路由协议,指出有待解决的问题,在此基础上提出一种改进的、有效的安全路由协议（SEAR）,阐述了该协议的路由请求、响应和维护的路由方式和过程,并通过协议间的比较分析其安全性和网络性能。该方案采用对称密钥协商和公钥认证方式,在兼顾性能资源的同时也保证了Adhoc网络的路由安全。     

FSR和Lanmar结合应用于移动Ad hoc网

移动Adhoc网在军事和民用方面具有广阔的应用前景，是近几年网络研究的热点问题。主要介绍了Lanmar路由协议和FSR路由协议如何有效配合应用于移动Adhoc。     

Ad hoc网络路由协议的仿真及研究

Adhoc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。由于其复杂性和多样性,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。本文对Adhoc网络目前常用的路由协议在OPNET平台上进行了仿真,通过比较和研究网络吞吐量,延时和路由开销等性能参数分析出各路由协议适应的网络环境。     

Simulation of Ad Hoc Routing Protocols using OMNeT++

Mobile Ad Hoc Networks (MANETs) have evolved in the last years into standards in the communication world. By definition, they do not need any network infrastructure to facilitate communication between participating nodes. Therefore, MANETs are dealing with new challenges in the context of ad hoc routing. Simulation techniques are one of the fundamental methodologies to support the protocol engineering process, especially in the early stages of ad hoc network protocol design. In this paper, we set out common criteria that may serve as guidelines for meaningful simulative evaluations of ad hoc routing protocols. We present typical and necessary measures for ad hoc routing in general and MANET routing in particular. As a case study, we demonstrate a comprehensive performance evaluation of the Dynamic MANET On Demand (DYMO) routing protocol using a model we implemented for the popular OMNeT+ + discrete event simulation environment.     

Video transmission in mobile ad hoc networks using multiple interfaces and multiple channels

Mobile Ad hoc NETworks (MANETs) are an important part of wireless communications and the increasing use of mobile devices is confirming that. MANETs can be of great value in Emergency Response situations where communication between mobile deployed units is critical and wired or wireless infrastructures may not be present or functional. In emergency scenarios, multimedia communication is very important for decision making and situation assessment. This requires up‐to‐date (on‐line) information feed on the situation, including voice and video from the affected zone. However, MANETs do not seem to efficiently support multimedia applications, and this is quite evident in video transmission. One way to remedy this is to use more (wireless) interfaces per mobile node and consequently more communication channels. In this work, we perform an analytical study on the use of multiple interfaces and multiple channels (MIMC) in video transmission with respect to the requirements of Emergency Response Ad hoc Networks. More specifically, we examine and present the impact of using MIMC on MANETs during video transmission applications, we evaluate the performance of three basic routing protocols in MANETs, and we propose a channel selection mechanism in MANET nodes with MIMC for enhanced video transmission. In addition, we evaluate video transmission streams with rate adaptation and present comparative results. The proposed mechanism is evaluated using the ns‐2 network simulator and the simulations are performed for a variety of topologies. Simulation results show that the different routing protocols respond differently when MIMC is introduced. The Ad hoc On‐Demand Multipath Distance Vector and (especially) the Ad hoc On‐Demand Distance Vector routing protocols benefit significantly, while the Destination Sequenced Distance Vector shows fewer improvements. The proposed mechanism is shown to be beneficial for transmitting video streams and enhances the network's ability to accommodate more streams and reduce packet delay. Copyright © 2016 John Wiley & Sons, Ltd.     

移动自组织网络中基于树结构的优化组播路由算法(英)

Mobile Ad hoc Networks(MANETs) play an important role in emergency communications where network needs to be constructed temporarily and quickly.Since the nodes move randomly,routing protocols must be highly effective and reliable to guarantee successful packet delivery.Based on the data delivery structure,most of the existing multicast routing protocols can be classified into two folders:tree-based and mesh-based.We observe that tree-based ones have high forwarding efficiency and low consumptions of bandwidth,and they may have poor robustness because only one link exists between two nodes.As a treebased multicast routing protocol,MAODV(Multicast Ad hoc On-demand Vector) shows an excellent performance in lightweight ad hoc networks.As the load of network increases,QoS(Quality of Service) is degraded obviously.In this paper,we analyze the impact of network load on MAODV protocol,and propose an optimized protocol MAODV-BB(Multicast Ad hoc On-demand Vector with Backup Branches),which improves robustness of the MAODV protocol by combining advantages of the tree structure and the mesh structure.It not only can update shorter tree branches but also construct a multicast tree with backup branches.Mathematical analysis and simulation results both demonstrate that the MAODV-BB protocol improves the network performance over conventional MAODV in heavy load ad hoc networks.     

Joint Design of Routing and Medium Access Control for Hybrid Mobile Ad Hoc Networks

Efficient routing and medium access control (MAC) are very important for Mobile Ad hoc Networks (MANETs). Most existing routing and MAC protocols consider homogeneous ad hoc networks, in which all nodes are modeled as the same, i.e., they have the same communication capabilities and characteristics. Although a homogeneous network model is simple and easy to analyze, it misses important characteristics of many realistic MANETs such as military battlefield ad hoc networks. In addition, a homogeneous ad hoc network suffers from poor performance and scalability. In many ad hoc networks, multiple types of nodes do co-exist; and some nodes have larger transmission power, higher transmission data rate, and better processing capability, are more reliable and robust than other nodes. Hence, a hybrid network model is more realistic and provides many advantages for designing better routing and MAC protocols. In this paper, we present a new routing protocol called Hybrid Routing, which is specifically designed for hybrid MANETs. In addition, a novel MAC protocol is jointly designed for hybrid MANETs. Extensive simulations demonstrate that the proposed routing MAC protocols have very good performance.

IoT energy efficiency routing protocol using FHO-based clustering and improved CSO model-based routing in MANET

Many protocols, services, and electrical devices with built-in sensors have been developed in response to the rapid expansion of the Internet of Things. Mobile ad hoc networks (MANETs) consist of a collection of autonomous mobile nodes that can form an ad hoc network in the absence of any pre-existing infrastructure. System performance may suffer due to the changeable topology of MANETs. Since most mobile hosts operate on limited battery power, energy consumption poses the biggest challenge for MANETs. Both network lifetime and throughput improve when energy usage is reduced. However, existing approaches perform poorly in terms of energy efficiency. Scalability becomes a significant issue in large-scale networks as they grow, leading to overhead associated with routing updates and maintenance that can become unmanageable. This article employs a MANET routing protocol combined with an energy conservation strategy. The clustering hierarchy is used in MANETs to maximize the network's lifespan, considering its limited energy resources. In the MANET communication process, the cluster head (CH) is selected using Fire Hawk Optimization (FHO). When choosing nodes to act as a cluster for an extended period, CH election factors in connectivity, mobility, and remaining energy. This process is achieved using an optimized version of the Ad hoc On-Demand Distance Vector (AODV) routing protocol, utilizing Improved Chicken Swarm Optimization (ICSO). In comparison to existing protocols and optimization techniques, the proposed method offers an extended network lifespan ranging from 90 to 160 h and reduced energy consumption of 80 to 110 J, as indicated by the implementation results.     

Application of ID-based aggregate signature in manets

Aggregate signatures are a useful primitive which allows aggregating many signatures on different messages computed by different users into a single and constant-length signature and adapts to Mobile Ad hoc NETwork (MANETs) very much. Jumin Song, et al. presented an ID-based aggregate signature, applied it to MANETs and proposed a secure routing scheme. In this work, we analyze Jumin Song, et al.’s aggregate signature scheme and find some limitations on its batch verification. In addition, in this work, we apply Craig Gentry, et al.’s ID-based aggregate signature to on-demand routing protocol to present a secure routing scheme. Our scheme not only provides sound authentication and a secure routing protocol in ad hoc networks, but also meets the nature of MANETs.     

无线自组织网络的路由选择研究

本文简述了无线自组织网络的主要特征,详细介绍了自组织网络常用的路由协议,对一种实用自组织网络的路由选择进行了分析研究,并给出了针对该实用自组织网络中不同类型的通信链路所采用的路由协议及相应的路由选择算法。     

Reliable Distributed Local Repair Approach for Maximizing Reliability and Packet Delivery Rate in Wireless on Demand AODV Networks

The most used protocol in Mobile Ad hoc Networks (MANETs) uses the Ad hoc On-Demand Distance Vector (AODV) routing protocol for achieving dynamic, self-organizing, and on-demand multihop routing. In AODV, wireless links may be lost occasionally because the nodes on the routing path are unreachable. Such a problem causes AODV inefficient and unreliable. For solving the problem, AODV provides a local repair mechanism for an intermediate node to find an alternative route to destination when the node detects links broken. The repair mechanism uses the broadcast-type RREQ message for discovering a repair route, which results in a large number of repair control messages and requires a large amount of power consumption for sending these messages. Therefore, in this paper we propose a unicast-type distributed local repair protocol for repairing breaks expeditiously, i.e., achieving high network reliability and utilization, less the number of control messages, and less the repair delay. Furthermore, the optimal number of hops in a neighbor table is analyzed. Numerical results indicate that the proposed approach is superior to other repair approaches in terms of successful fixing rate, control message overhead, and network utilization.     

A loop-based approach in clustering and routing in Mobile Ad hoc NETworks

Although clustering is a convenient framework to enable traffic control and service support in Mobile Ad hoc NETworks （MANETs）, it is seldom adopted in practice due to the additional traffic overhead it leads to for the resource limited ad hoc network. In order to address this problem, we proposed a loop-based approach to combine clustering and routing. By employing loop topologies, topology information is disseminated with a loop instead of a single node, which provides better robustness, and the nature of a loop that there are two paths between each pair of nodes within a loop composed of setup procedure, regular procedure and emergent route recovering. suggests smart route recovery strategy. Our approach is recovery procedure to achieve clustering, routing and