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Biased Random Walks in Uniform Wireless Networks
April 2009 (vol. 8 no. 4)
pp. 500-513
ASCII Text
x 
 
Roberto Beraldi, "Biased Random Walks in Uniform Wireless Networks," IEEE Transactions on Mobile Computing, vol. 8, no. 4, pp. 500-513, April, 2009.
 
 
BibTex
x
 
@article{ 10.1109/TMC.2008.151,
author = {Roberto Beraldi},
title = {Biased Random Walks in Uniform Wireless Networks},
journal ={IEEE Transactions on Mobile Computing},
volume = {8},
number = {4},
issn = {1536-1233},
year = {2009},
pages = {500-513},
doi = {http://doi.ieeecomputersociety.org/10.1109/TMC.2008.151},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Mobile Computing
TI - Biased Random Walks in Uniform Wireless Networks
IS - 4
SN - 1536-1233
SP500
EP513
EPD - 500-513
A1 - Roberto Beraldi,
PY - 2009
KW - Algorithm/protocol design and analysis
KW - random walks
KW - mobile ad hoc networks
KW - search algorithms.
VL - 8
JA - IEEE Transactions on Mobile Computing
ER -
 
Roberto Beraldi, University of Rome, Rome
A recurrent problem when designing distributed applications is to search for a node with known property. File searching in peer-to-peer (P2P) applications, resource discovery in service-oriented architectures (SOAs), and path discovery in routing can all be cast as a search problem. Random walk-based search algorithms are often suggested for tackling the search problem, especially in very dynamic systems-like mobile wireless networks. The cost and the effectiveness of a random walk-based search algorithm are measured by the excepted number of transmissions required before hitting the target. Hence, to have a low hitting time is a critical goal. This paper studies the effect of biasing random walk toward the target on the hitting time. For a walk running over a network with uniform node distribution, a simple upper bound that connects the hitting time to the bias level is obtained. The key result is that even a modest bias level is able to reduce the hitting time significantly. This paper also proposes a search protocol for mobile wireless networks, whose results are interpreted in the light of the theoretical study. The proposed solution is for unstructured wireless mobile networks.

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Index Terms:
Algorithm/protocol design and analysis, random walks, mobile ad hoc networks, search algorithms.
Citation:
Roberto Beraldi, "Biased Random Walks in Uniform Wireless Networks," IEEE Transactions on Mobile Computing, vol. 8, no. 4, pp. 500-513, April 2009, doi:10.1109/TMC.2008.151
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