Project Description and Motivation

A network of infostations offering high bandwidth islands of data connectivity has often been suggested as a viable alternative to cellular WAN for providing network connectivity for mobile devices. Current data management models proposed for such networks treat these infostations mainly as passive entities that offer devices in range, access to needed information. In this paper, we propose a novel approach wherein infostations actively participate in delivering content even to devices that are not in range. Other participating mobile devices that have excess spare capacity are used as carrier nodes to transport data towards remote devices. Short range wireless technologies enabling creation of ad-hoc peer-to-peer networking capabilities between devices are used to form transient communities to exchange information. The infostations are responsible for selecting appropriate carrier devices to use so that these carriers meet the device in need at the appropriate time to participate in this collaboration. Through this, dependency on the more expensive WAN networks is minimized. We present a design of our proposed framework and its components along with a prototype implementation.

 

Papers, Slides and Demos

Papers

Sethuram Balaji Kodeswaran, Olga Ratsimor, Anupam Joshi, Timothy Finin, Yelena Yesha, Using Peer-to-Peer Data Routing for Infrastructure-based Wireless Networks, PerCom, March 2003.

Olga Ratsimor, Sethuram Balaji Kodeswaran, Anupam Joshi, Timothy Finin, Yelena Yesha, Combining Infrastructure and Ad hoc Collaboration For Data Management in Mobile Wireless Networks, Workshop on "Ad hoc Communications and Collaboration in Ubiquitous Computing Environments", Nov 2002.

Sethuram Balaji Kodeswaran, Olga Ratsimor, Anupam Joshi, Timothy Finin, Yelena Yesha, Numi: A Framework for Collaborative Data Management in a Network of InfoStations, UMBC SRC, November 2002

 

Slides

 NUMI Slides (PPT.zip)(March 2003)

 NUMI Slides (PPT.zip)(Nov 2002)

 Short Design Description

 Numi Poster

 Problem Statement