Mobile Ad Hoc Networks

2005 ◽  
pp. 494-496
Author(s):  
Jiankun Hu
Keyword(s):  
Communication Networks ◽  
Computer Networks ◽  
Ad Hoc ◽  
Packet Switching ◽  
Computer Network ◽  
Circuit Switching ◽  
Telephone Networks ◽  
History Of ◽  
Geographically Distributed ◽  
Hoc Networks

he history of computer networks can be traced back to the early 1960s, when voice-grade telephone networks dominated the communication networks. With the increasing importance of computers, as well as the ever-increasing expense of centralized mainframe computers that were growing in size, there was a need to decentralize computer systems. This trend also highlighted the need to connect computers together, by means of computer networks, so that their capacity could be shared among geographically distributed users. Unlike the circuit switching telephone networks, where voice is transmitted at a constant rate between sender and receiver, the traffic in computer networks tends to be bursty. To meet the requirements of data communications, people began to invent more efficient and robust networks, i.e., packet switching networks. The first published work on packet-switching techniques was that of Leonard Kleinrock (Kleinrock, 1961, 1964). The first packet-switching computer network called ARPANET was developed in 1969 and then became the ancestor of today’s public Internet (Kurose & Ross, 2001).

New Computer Network Paradigms and Virtual Organizations

2010 ◽  
pp. 1066-1073
Author(s):  
Guillermo Agustín Ibáñez Fernández
Keyword(s):  
Computer Networks ◽  
Packet Switching ◽  
Computer Network ◽  
The United States ◽  
Circuit Switching ◽  
Multiple Node ◽  
Small Set ◽  
Research Centres ◽  
Dominant Paradigm ◽  
Node Failures

A computer network consists of computers that communicate via any physical media through a network formed by links and nodes, the nodes being the computers. Computer networks have evolved along their short history. Computer networks have changed drastically in mission and implementation from the early projects supported by the Advanced Research Projects Agency (ARPA) and from other organizations, tracing back the origins to 1962. The ARPA network (ARPANET) consisted initially of a small set of nodes at research centres and universities, connected with links at 56 kbps across the United States. ARPANET was the core of the early Internet, a network for research centres and universities. Computer networks are based on the concept of packet switching within a shared communication medium, as opposite to circuit switching, the dominant paradigm for the precedent telegraph and telephone networks. In 1968 Paul Baran proposed a network system based on nodes that forward datagrams or packets from different users over a common line between computer systems from origin to destination. The packet switching paradigm provides resiliency of network against network node failures, the independent routing of datagrams per node makes possible that the datagrams reach their destination even in presence of multiple node failures.

New Computer Network Paradigms and Virtual Organizations

2010 ◽  
pp. 2343-2352
Author(s):  
Guillermo Agustín Ibáñez Fernández
Keyword(s):  
Computer Networks ◽  
Packet Switching ◽  
Computer Network ◽  
The United States ◽  
Circuit Switching ◽  
Multiple Node ◽  
Small Set ◽  
Research Centres ◽  
Dominant Paradigm ◽  
Node Failures

A computer network consists of computers that communicate via any physical media through a network formed by links and nodes, the nodes being the computers. Computer networks have evolved along their short history. Computer networks have changed drastically in mission and implementation from the early projects supported by the Advanced Research Projects Agency (ARPA) and from other organizations, tracing back the origins to 1962. The ARPA network (ARPANET) consisted initially of a small set of nodes at research centres and universities, connected with links at 56 kbps across the United States. ARPANET was the core of the early Internet, a network for research centres and universities. Computer networks are based on the concept of packet switching within a shared communication medium, as opposite to circuit switching, the dominant paradigm for the precedent telegraph and telephone networks. In 1968 Paul Baran proposed a network system based on nodes that forward datagrams or packets from different users over a common line between computer systems from origin to destination. The packet switching paradigm provides resiliency of network against network node failures, the independent routing of datagrams per node makes possible that the datagrams reach their destination even in presence of multiple node failures.

scholarly journals Self-organizing topology for energy-efficient ad-hoc communication networks of mobile devices

2020 ◽  
Author(s):  
Indushree Banerjee ◽  
Martijn Warnier ◽  
Frances M. T Brazier
Keyword(s):  
Communication Network ◽  
Mobile Devices ◽  
Communication Networks ◽  
Energy Efficient ◽  
Ad Hoc ◽  
Preferential Attachment ◽  
Scale Free ◽  
Simulated Environment ◽  
Adaptive Topology ◽  
Hoc Networks

Abstract When physical communication network infrastructures fail, infrastructure-less communication networks such as mobile ad-hoc networks (MANET), can provide an alternative. This, however, requires MANETs to be adaptable to dynamic contexts characterized by the changing density and mobility of devices and availability of energy sources. To address this challenge, this paper proposes a decentralized context-adaptive topology control protocol. The protocol consists of three algorithms and uses preferential attachment based on the energy availability of devices to form a loop-free scale-free adaptive topology for an ad-hoc communication network. The proposed protocol has a number of advantages. First, it is adaptive to the environment, hence applicable in scenarios where the number of participating mobile devices and their availability of energy resources is always changing. Second, it is energy-efficient through changes in the topology. This means it can be flexibly be combined with different routing protocols. Third, the protocol requires no changes on the hardware level. This means it can be implemented on all current phones, without any recalls or investments in hardware changes. The evaluation of the protocol in a simulated environment confirms the feasibility of creating and maintaining a self-adaptive ad-hoc communication network, consisting of multitudes of mobile devices for reliable communication in a dynamic context.

Mobile Ad Hoc Networks

2011 ◽  
pp. 2562-2566
Author(s):  
Carlos Tavares Calafate ◽  
Pedro Pablo Garrido ◽  
José Oliver ◽  
Manuel Pérez Malumbres
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Transport Layer ◽  
Future Trends ◽  
Mac Layers ◽  
Network Concept ◽  
History Of ◽  
Mobile Ad Hoc ◽  
Hoc Networks

This chapter offers a state-of-the-art review in mobile ad hoc networks (MANETs). It first introduces the history of ad hoc networks, explaining the ad hoc network concept and referring to the main characteristics of these networks and their fields of application. It then focuses on technologies and protocols specific to ad hoc networks. Firstly, it refers to relevant proposals targeting the PHY/MAC layers. Secondly, it discusses the different routing protocol proposals for ad hoc networks according to the category to which they belong. Finally, it includes an overview of the different protocols proposed for ad hoc networks at the transport layer. The chapter concludes with some remarks on future trends in these networks.

scholarly journals Context-aware packet switching in ad hoc networks

2008 ◽  
Author(s):  
J.J. Garcia-Luna-Aceves ◽  
Marc Mosko ◽  
Ignacio Solis ◽  
Rebecca Braynard ◽  
Rumi Ghosh
Keyword(s):  
Ad Hoc Networks ◽  
Ad Hoc ◽  
Packet Switching ◽  
Context Aware ◽  
Hoc Networks

scholarly journals A Comprehensive Survey on Cryptography Evaluation in Mobile (MANETs)

2021 ◽  
Vol 12 (2) ◽  
pp. 3406-3416
Author(s):  
Suneetha Bulla, Et. al.
Keyword(s):  
Wireless Communication ◽  
Ad Hoc Networks ◽  
Communication Networks ◽  
Key Management ◽  
Ad Hoc ◽  
Rapid Development ◽  
Large Family ◽  
Wide Range ◽  
Comprehensive Survey ◽  
Hoc Networks

With the rapid development in network technology new network types based on wireless communication have emerged. A large family of wireless communication networks is the Mobile Ad hoc Networks (MANETs). While MANETs mobile devices should be able to connect with each other at any time and place, the vulnerabilities of MANET structure also introduce a wide range of attacks and present new challenges for the design of security mechanism ranging from developing and implementing lightweight cryptographic primitives to designing and analyzing secure protocols. Numerous security solutions and key management schemes such as symmetric and asymmetric cryptography have been used to support MANET environment. This paper conducted survey to gain a quick knowledge of security design demand and cryptography solutions to secure MANET.  This survey focused on security schemas and case studies of cryptography techniques on Ad Hoc networks. Finally, conclusions are discussed.

scholarly journals Hierarchical model of information signals formation at the physical layer in FANET

2020 ◽  
Vol 11 (30) ◽  
pp. 178-188
Author(s):  
G. S. Vasilyev ◽  
O. R. Kuzichkin ◽  
I. A. Kurilov ◽  
D. I. Surzhik
Keyword(s):  
Communication Networks ◽  
Hierarchical Model ◽  
Ad Hoc ◽  
Multipath Propagation ◽  
Communication Channels ◽  
Analytical Description ◽  
Physical Layer ◽  
Network Equipment ◽  
Hoc Networks ◽  
Nonlinear Signal

Creation of reliable and efficient flying ad-hoc networks (FANET) requires detailed development of the model of the physical layer of data transmission, determined by the conditions of operation of the networks. The problems of well-known software simulators of communication networks are the simplified nature of the physical layer, as well as the inability to obtain specific analytical solutions in the process of simulation. The hierarchical model of formation of information signals which allows to represent various types of communication channels and the channel-forming equipment, for providing their analytical description and the further analysis is developed. The model allows to describe communication channels between UAVs and (or) ground control centers taking into account the effects of attenuation, intersymbol interference, multipath propagation of signals; schemes of terminal and intermediate network equipment with linear and nonlinear signal conversion; circuits with forward regulation, backward regulation and combined regulation; circuits with multi-channel signal generation and processing, as well as cross-links between channels. Analytical expressions of the transfer function of the generalized hierarchical model for an arbitrary number of disclosed levels of hierarchy are obtained. An example of the presentation and study of the UAV transmitter circuit on the basis of a hierarchical model of signal formation is considered.

Mobile Ad Hoc Networks

2011 ◽  
pp. 31-47 ◽  
Author(s):  
Crescenzio Gallo ◽  
Michele Perilli ◽  
Michelangelo De Bonis
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Communication Networks ◽  
Ad Hoc ◽  
Point Of View ◽  
Practical Implementation ◽  
Link Stability ◽  
Research Problems ◽  
Mobile Ad Hoc ◽  
Hoc Networks

Mobile communication networks have become an integral part of our society, significantly enhancing communication capabilities. Mobile ad hoc networks (MANETs) extend this capability to any time/anywhere communication, providing connectivity without the need of an underlying infrastructure. The new coming realm of mobile ad hoc networks is first investigated, focusing on research problems related to the design and development of routing protocols, both from a formal and technical point of view. Then link stability in a high mobility environment is examined, and a route discovery mechanism is analyzed, together with a practical implementation of a routing protocol in ad hoc multi-rate environments which privileges link stability instead of traditional speed and minimum distance approaches.

scholarly journals A cooperative heterogeneous vehicular clustering framework for efficiency improvement

2021 ◽  
Vol 22 (9) ◽  
pp. 1247-1259
Author(s):  
Iftikhar Ahmad ◽  
Rafidah Md Noor ◽  
Zaheed Ahmed ◽  
Umm-e-Habiba ◽  
Naveed Akram ◽  
...  
Keyword(s):  
Communication Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Road Traffic ◽  
Simulation Environment ◽  
Traffic Efficiency ◽  
Dedicated Short Range Communication ◽  
Micro Level ◽  
Hoc Networks

AbstractHeterogeneous vehicular clustering integrates multiple types of communication networks to work efficiently for various vehicular applications. One popular form of heterogeneous network is the integration of long-term evolution (LTE) and dedicated short-range communication. The heterogeneity of such a network infrastructure and the non-cooperation involved in sharing cost/data are potential problems to solve. A vehicular clustering framework is one solution to these problems, but the framework should be formally verified and validated before being deployed in the real world. To solve these issues, first, we present a heterogeneous framework, named destination and interest-aware clustering, for vehicular clustering that integrates vehicular ad hoc networks with the LTE network for improving road traffic efficiency. Then, we specify a model system of the proposed framework. The model is formally verified to evaluate its performance at the functional level using a model checking technique. To evaluate the performance of the proposed framework at the micro-level, a heterogeneous simulation environment is created by integrating state-of-the-art tools. The comparison of the simulation results with those of other known approaches shows that our proposed framework performs better.

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