Mobile Computing
and Communications Review


Abstracts from Volume 2, Number 2 of MC2R


RDRN: A Prototype for a Rapidly Deployable Radio Network

Ricardo J. Sanchez Joseph B. Evans
rsanchez@ittc.ukans.edu evans@ittc.ukans.edu
Gary J. Minden Victor S. Frost K. Sam Shanmugan
gminden@ittc.ukans.edu frost@ittc.ukans.edu shanmuga@ittc.ukans.edu

Information and Telecommunication Technology Center
Department of Electrical Engineering & Computer Science
University of Kansas, Lawrence, KS 66045

This paper reports on the initial implementation of an experimental wireless ATM network architecture called RDRN (Rapidly Deployable Radio Network). The RDRN architecture consists of two types of transportable nodes, remote nodes (RNs) and edge nodes (ENs), which utilize GPS-derived location information to rapidly configure themselves into a high capacity wireless network operating at 1-10 Mb/s over distances as far as 10 kilometers. The initial prototype has been deployed and early experiments have been conducted to validate hardware, software, and protocol design and implementation. In addition to describing the RDRN architecture and protocols, this paper details experiences at the DARPA GLOMO '97 demonstration of the RDRN project.


RMDP: an FEC-based Reliable Multicast Protocol for Wireless Environments

Luigi Rizzoa Lorenzo Vicisanob
l.rizzo@iet.unipi.it L.Vicisano@cs.ucl.ac.uk

aDip. di Ingegneria dell'Informazione, Univ. di Pisa, via Diotisalvi 2 -- 56126 Pisa, Italy
bDept. of Computer Science, University College London, Gower Street, London WC1E 6BT, U.K.

In this paper we present a Reliable Multicast data Distribution Protocols (RMDP), and discuss its performance. The protocol is based on the use of FEC techniques to drastically reduce the impact of independent losses for different receivers, which make ARQ-based protocols perform very poorly as the number of receivers grows. The protocol is well-suited to the use with mobile equipment because of its simplicity, robustness to losses, moderate demand for feedback, and scalability.


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