A brief overview of ad hoc networks: challenges and directions (original) (raw)

THE WHAT, WHY AND HOW OF AD HOC NETWORKS

In recent years, many network scientists have turned their attention away from centralized networks, such as the Internet and the cell-phone network, toward the ad hoc networks-wireless networks formed on the fly. The problems of ad-hoc networks are very tantalizing, they are exciting to work on and they have an interesting mathematical structure. Despite the technical challenges, the interests of the ad hoc networks kept on increasing, because they support mobility and are very well-suited for many difficult situations, such as rescue mission, military, vehicular communications, etc. All of traditional distributed computing theory deals with wired-network and those communication protocols have been studied for many years. This work presents a descriptive of the what, why and how of ad-hoc networks-the concept of ad hoc networks. Keywords: ad hoc, communication, routing, on the fly and centralized networks. 1.0 INTRODUCTION Since the inception of wireless networking there have been two types of wireless networks: the infrastructure network, including some Local Area Networks (LANs), and the ad hoc network. Ad hoc in Latin means 'for this purpose'. Ad hoc networks therefore refer to networks created for a particular purpose. They are often created on-the-fly and for one-time or temporary use. Often, ad hoc networks comprised of a group of workstations or other wireless devices which communicate directly with each other to exchange information. These connections are spontaneous networks, available to whoever is in a given area. An ad hoc network is one where there are no access points passing information between participants. Infrastructure networks pass information through a central information hub which can be a hardware device or software on a computer. Office networks, for example, generally use a server to which company workstations connect to receive their information. Ad hoc networks, on the other hand, do not go through a central information hub. Ad hoc networks are common for portable video game systems like the Sony PSP or the Nintendo DS because they allow players to link to each other to play video games 2278-1080

Special Issue on “Mobile Ad-Hoc Wireless Networks”

Journal of Advanced Research, 2011

Mobile Ad Hoc wireless Networks (MANETs) is defined as a multi-hop infrastructureless wireless network which is self-organized and connects two or more stations spontaneously in the absence of central point or any access point. It allows peer-to-peer connections between devices that are operating in ad-hoc mode and are within the wireless range. They can form standalone groups of wireless nodes and can be connected to a cellular or fixed network. Nodes in a mobile adhoc network are free to move and organize themselves in an arbitrary fashion. Each user is free to roam about while communicating with others. Ad-hoc networks are suited for use in situations where an infrastructure is unavailable or when the costs to deploy one are very high.

RESEARCH ON AD HOC NETWORKING: CURRENT ACTIVITY AND FUTURE DIRECTIONS

This article is a survey on the current status and direction of research on ad hoc networking. We categorize the ongoing research and outline the major challenges which have to be solved before widespread deployment of the technology is possible. The views presented by Perkins in [1] are used as a premise, which is then complemented with discussion and references to the latest publications.

Study of Mobile Ad hoc Networks

International Journal of Computer Applications, 2013

Mobile Ad-hoc networks (MANET) are usually defined as a set of wireless mobile nodes dynamically self organizing a temporary network without any central administration or existing infrastructure. This is mainly due to the mobility of the nodes .Much of this work is targeted to increase the network performance on the network layer and finding a feasible route from a source to a destination without considering current network traffic or application requirements. Due to their decentralized, self-configuring and dynamic nature, MANETs offers several advantages and disadvantages. In this paper we present an overview of (MANET) by presenting their characteristics, functionality, challenging applications and routing protocols.

A Look into Ad-Hoc Networks or Mobile Ad Hoc Networks (MANETs)

Seminar, 2019

Ad hoc networks is a type of wireless network created for a temporal purpose, mostly for communication, sharing of files, playing games, etc. It does not need any infrastructure to be deployed. So easy to start; but still have some contigencies in case of security. Ad Hoc networks (MANETs) are also called a peer-to-peer wireless networks. This research looked into ad hoc networks in relating to security, challenges and prospects.

A Study of Research Trends and Issues in Wireless Ad Hoc Networks

Handbook of Research on Progressive Trends in Wireless Communications and Networking, 2014

Ad hoc network enables network creation on the fly without support of any predefined infrastructure. The spontaneous erection of networks in anytime and anywhere fashion enables development of various novel applications based on ad hoc networks. However, at the same ad hoc network presents several new challenges. Different research proposals have came forward to resolve these challenges. This chapter provides a survey of current issues, solutions and research trends in wireless ad hoc network. Even though various surveys are already available on the topic, rapid developments in recent years call for an updated account on this topic. The chapter has been organized as follows. In the first part of the chapter, various ad hoc network's issues arising at different layers of TCP/IP protocol stack are presented. An overview of research proposals to address each of these issues is also provided. The second part of the chapter investigates various emerging models of ad hoc networks, discusses their distinctive properties and highlights various research issues arising due to these properties. We specifically provide discussion on ad hoc grids, ad hoc clouds, wireless mesh networks and cognitive radio ad hoc networks. The chapter ends with presenting summary of the current research on ad hoc network, ignored research areas and directions for further research.

Relevance, Influence and Threat of Wireless Ad-Hoc Network

In these days, we have seen a rapid expansionin the field of mobile computing due to widely available wireless devices.However, current devices, applications and protocolsare completely focused on cellular or wireless local areanetworks.A mobile ad hoc network is an autonomous collection of mobile devices (laptops, smart phones,sensors, etc.) that communicate with each other overwireless links and cooperate in a distributed mannerin order to provide the necessary network functionality in the absence of a fixed framework. Ad hoc structure does not require an access point, it is easy to setup, especially in a small or temporary network. Each node in the network forwards the packet without the need of central administration. In ad hoc network, node acts as a router to send and receive the data. An advantage of the system is robustness, flexibility and mobility. This paper is focused on the applications, advantages and challenges of ad hoc networks.

Applications, Advantages and Challenges of Ad Hoc Networks

Recent trends in compact computing and wireless technologies are expansion of ad hoc network. Ad hoc network consists of versatile flat forms which are free to move expeditiously. Ad hoc networks are multi-hop network that use wireless communication for transmission without any fixed infrastructure. The networks are form and deform on-the-fly without the need for any system. Ad hoc structure does not require an access point, it is easy to setup, especially in a small or temporary network. Each node in the network forwards the packet without the need of central administration. In ad hoc network, node acts as a router to send and receive the data. An advantage of the system is robustness, flexibility and mobility. Ad hoc network are capable for analyzing radio propagation environment to optimize the performance. This typically requires that the network node have positioning capability as well as memory to recall geographical local condition. An ad hoc network typically refers to any set of network where all devices have equal status on a network and are free to associate with any other ad hoc network device in link range. Ad hoc network often refers to a mode of operation of IEEE802.11 wireless networks. This review is focused on the applications, advantages and challenges of ad hoc networks.