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Unformatted text preview: Ad Hoc Networks Model Analysis and Security Issues Gaurav Bansal Email: [email protected] ABSTRACT Wireless data networks present a more constraint communication environment compared to the wired networks. Because of fundamental limitations of power and available spectrum, wireless data networks tend to have less bandwidth, more latency, less connection stability and less predictable availability. Wireless access to Internet services will become typical, rather than the exception as it is today. Such a vision presents greater demands on mobile networks and so things are changing at a rapid rate in this field towards advancement. The growing needs of users to incorporate multimedia information in hand held devices makes the things more complicated to handle large amounts of data on optimized networks and all the more it makes the environment more prone to external threats in various manners. This paper presents an analysis of the model of Ad Hoc networks design. It also includes a survey of some common security threats to which Ad Hoc networks are exposed to as well as some proposed solutions to deal with such threats. Thus Ad Hoc networks present a situation where not only things have to be made easy for the end user but on the contrary there has to be some tough time for the professional hackers. Introduction The development of commodity- based palmtop devices with built-in high-speed packet radio access to the Internet will have a major impact on the way we communicate. Large numbers of mobile users equipped with wireless IP- enabled communicators will have access to a wide array of Web-based mobile multimedia services. Future wireless network infrastructure will have to support a wide variety of users, applications, and access needs. High-speed access can be achieved by using smaller and smaller cell sizes, resulting in coverage areas with a larger number of base stations. One can imagine a scenario where each person’s office has its own access point offering tens to hundreds of megabits per second of wireless access in an Ad Hoc network environment. These types of Pico cellular environments call for simple, low-cost wireless infrastructure that ultimately must compete with wireline LAN service quality, costs, security, and plug-and play scalability. Mobile users will expect the same level of service quality as wireline users. That will translate to high-speed access with seamless mobility , which we define as the ability of the network to support fast handoff between base stations with low delay and minimum or zero packet loss. As base station density increases, however, so will handoff rates. This places significant demands on future Ad Hoc network architecture, protocols, and services to support seamless mobility. It is believed that support for seamless mobility will be needed in order to provide good service quality to mobile users, particularly in Pico cellular environments where the rate of handoff and associated signaling load grows rapidly. Network support for seamless mobility was not a primary design handoff and associated signaling load grows rapidly....
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This note was uploaded on 03/19/2012 for the course COMPUTER S 2143 taught by Professor Singh during the Spring '12 term at Punjab Engineering College.
- Spring '12