CiteULike: de elsantosneto mobile

Coupons: A Multilevel Incentive Scheme for Information Dissemination in Mobile Networks

Anargyros Garyfalos — 2008-05-09T21:07:05-00:00

Mobile Computing, IEEE Transactions on, Vol. 7, No. 6. (2008), pp. 792-804.

Integrating mobile computing and localized user interaction into the Internet requires more than simply overcoming pure routing challenges. Apart from issues such as intermittent connectivity and unreliable nodes, the human factor is becoming increasingly important. To date, user behavior has only been considered in terms of mobility patterns and incentives for encouraging cooperation. Moreover, the focus has always been on systems that aim to enforce fairness by either bringing an indirect equilibrium or by punishing "misbehaving" users. The goal of this paper is therefore to present "Coupons". "Coupons" is an idea to "define", "evaluate" and "implement" algorithms for the emerging class of social network and information sharing applications. "Coupons" is a system designed to allow users to opportunistically interact and share data through a wireless medium, to overcome highly variable Internet access through adaptive localized interaction, and to incorporate an incentive scheme to make the system usable and encourage participation.

Peer-to-Peer File Sharing for Mobile Devices

Imre Kelényi — 2008-05-06T03:39:14-00:00

Mobile Phone Programming (2007), pp. 311-324.

Summary. Peer-to-peer (P2P) file sharing is a relatively new addition to the growing list of mobile-based technologies. The advanced connectivity features and powerful hardware of new generation mobile devices facilitates the implementation of even the most complex P2P technologies. The characteristics of the P2P architecture, such as reliability, easy one-to-one communication, and extensible distribution of resources, make it one of the most suitable networking technologies for mobile systems. In this chapter, we give a summary of our experience in implementing the Gnutella and the BitTorrent file sharing technologies on a mobile platform. We examine the particular protocols and emphasize the points relevant to the mobile implementation.

A Cross-layer Decentralized BitTorrent for Mobile Ad hoc Networks

Sundaram Rajagopalan — 2008-05-03T19:54:44-00:00

Mobile and Ubiquitous Systems - Workshops, 2006. 3rd Annual International Conference on (2006), pp. 1-10.

In recent years, a number of P2P systems, for instance, Gnutella, KaZaA, Napster, and BitTorrent, have been proposed for the wired Internet. However, these protocols are not immediately applicable to the mobile ad hoc networks (MANETs) owing to the extreme conditions MANETs operate under. Of the above protocols, although BitTorrent has several features which make it an ideal candidate for adapting to MANETs, the current specification of BitTorrent has several drawbacks which make a straightforward implementation of BitTorrent for MANETs an undesirable solution. In this paper, we investigate a straightforward implementation of BitTorrent in MANETs, termed BTI, and compare its performance with a cross-layer adaptation of BitTorrent for MANETs, termed BTM. We resolve the issues of centralized control and single point of failure in BTI by proposing mechanisms to decentralize the BitTorrent model for MANETs and provide resource/data redundancy to improve the protocol performance. In addition, the cross-layer model of BTM is more suited for use in a MANET. Our performance comparison studies show that BTM is able to outperform BTI in terms of goodput, and the number of pieces delivered, in the context of amortizing the client download expenses over more connections (that is, BTM has a higher average peer degree)

Mobile Phone Programming: and its Application to Wireless Networking

Frank Fitzek — 2008-05-01T19:55:54-00:00

(17 August 2007)

This book provides a solid overview of mobile phone programming targeting both academia and industry. The book covers all commercial realizations of Symbian, Windows Mobile and Linux platforms. Each programming language (JAVA, Python, C/C++) and a set of development environments are introduced “step by step” making developers familiar with current limitations, pitfalls, and challenges. Each chapter contains examples and source code to rapidly make developers familiar with the most important concepts. Examples cover peer to peer networks, cooperative networking, cross layer protocol design, key challenges such as power consumption, and sensor networks for which a full hardware and software implementation is provided. The book’s DVD contains all presented development environments and source code examples. Whether you are an experienced developer or an advanced student this book will be your key reference for successfully entering the world of software development for mobile devices.