BENEFIT-BASED DATA CACHING IN AD HOC NETWORKS-MOBILE COMPUTING

Data caching can significantly improve the efficiency of information access in a wireless ad hoc network by reducing the access latency and bandwidth usage. However, designing efficient distributed caching algorithms is non-trivial when network nodes have limited memory. In this article, we consider the cache placement problem of minimizing total data access cost in ad hoc networks with multiple data items and nodes with limited memory capacity. The above optimization problem is ....etc

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Presented by:George Mathew
Preejesh B
Rajesh M K
Sreelesh V

LEADER ELECTION IN MOBILE AD HOC NETWORKS


Abstract
We implement a leader election algorithms for mobile ad hoc networks. The algorithms ensure that eventually each connected component of the topology graph has exactly one leader. The algorithms are based on a routing algorithm called TORA. The algorithms require nodes to communicate with only their current neighbors. The algorith ....etc

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a pervasive computing environment can be expected based on the recent progresses and advances in computing and communication technologies. Next generation of mobile communication will include both popular infrastructured wireless networks and novel infrastructureless mobile ad-hoc networks (MANETs). A MANET is collection of wireless nodes that can dynamically form a network to exchange information without using any pre-existing fixed network infrastructure. Wireless ad-hoc networks are increasingly being used ....etc

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Abstract
The rapid proliferation of wireless networks and mobile computing applications has changed the landscape of network security. As the recent denial-of-service attacks on several major Internet sites have shown us, no open computer network is immune from intrusions. The traditional way of protecting networks with firewalls and encryption software is no longer sufficient and effective. The wireless ad-hoc network is particularly vulnerable due to its features of open medium, dynamic changing topology, cooperative algorithms, lack of cen ....etc

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A near-optimal multi cast scheme for mobile ad hoc networks using a hybrid genetic algorithm
Abstract: Multi cast routing is an effective way to communicate among multiple hosts in a network. It outperforms the basic broadcast strategy by sharing resources along general links, while sending information to a set of predefined multiple destinations concurrently. However, it is vulnerable to component failure in ad hoc network due to the lack of redundancy, multiple paths and multicast tree structure. Tree graph optimization problems (GO ....etc

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Summary: A mobile ad hoc network (MANET) is a collection of mobile nodes that forms a provisional network dynamically without the aid of any predetermined infrastructure. The salient nature of ad hoc networks renders them vulnerable to numerous types of security attacks. The dynamic feature of ad hoc networks makes enforcement of security become an extremely challenging issue. The main problem of many proposed routing protocols for ad hoc networks is that these protocols have critical susceptibilities to security attacks. Effective operation of ....etc

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Abstract

Security and privacy in mobile ad-hoc peer-to-peer environments are hard to attain, especially when working with passive objects without own processing power. We introduce a method for integrating such objects into a peer-to-peer environment without infrastructure components while providing a high level of privacy and security for peers interacting with objects. The integration is done by equipping passive objects with public keys, which can be used by peers to validate proxies acting on behalf of the objects. ....etc

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Mobile ad-hoc networks (MANETs) are becoming more popular due to their ability to model interesting aspects of real wireless networks. It is easy and cheap to build such networks because no other equipment or infrastructure are required besides the mobile devices. An MANET is composed of a set of nodes distributed in the plane. A signal sent by any node can be received by all the nodes within its transmission range, which is usually taken as one unit distance. One of the primary issues related to MANETs is the development of efficient routing a ....etc

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Abstract
An ad hoc network is the cooperative engagement of a collection of mobile nodes without the required intervention of any centralized access point or exist- ing infrastructure. Because of the node movement the routes will fail randomly. For communication to occur between hosts that are not within each others range, routes involving intermediate nodes must be established; however, since the hosts may be in motion, a host that was part of a route may move away from its up- stream and downstream partners, thus breaking t ....etc

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Toward Broadcast Reliability in Mobile Ad Hoc Networks with Double Coverage. (A New TCP for Persistent Packet Reordering).

Abstract:

The broadcast operation, as a fundamental service in mobile ad hoc networks (MANETs), is prone to the broadcast storm problem if forwarding nodes are not carefully designated. The objective of reducing broadcast redundancy while still providing high delivery ratio under high transmission error rate is a major challenge in MANETs. In this paper, we propose a simple broadcast algorith ....etc

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