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Consensus in Sparse, Mobile Ad Hoc Networks
March 2012 (vol. 23 no. 3)
pp. 467-474
ASCII Text
x 
 
Khaled Alekeish, Paul Ezhilchelvan, "Consensus in Sparse, Mobile Ad Hoc Networks," IEEE Transactions on Parallel and Distributed Systems, vol. 23, no. 3, pp. 467-474, March, 2012.
 
 
BibTex
x
 
@article{ 10.1109/TPDS.2011.182,
author = {Khaled Alekeish and Paul Ezhilchelvan},
title = {Consensus in Sparse, Mobile Ad Hoc Networks},
journal ={IEEE Transactions on Parallel and Distributed Systems},
volume = {23},
number = {3},
issn = {1045-9219},
year = {2012},
pages = {467-474},
doi = {http://doi.ieeecomputersociety.org/10.1109/TPDS.2011.182},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Parallel and Distributed Systems
TI - Consensus in Sparse, Mobile Ad Hoc Networks
IS - 3
SN - 1045-9219
SP467
EP474
EPD - 467-474
A1 - Khaled Alekeish,
A1 - Paul Ezhilchelvan,
PY - 2012
KW - Manet
KW - network density
KW - node connectivity
KW - crash tolerance
KW - consensus
KW - quiescent multicasting
KW - coverage assurance.
VL - 23
JA - IEEE Transactions on Parallel and Distributed Systems
ER -
 
Khaled Alekeish, Newcastle University, Newcastle upon Tyne
Paul Ezhilchelvan, Newcastle University, Newcastle upon Tyne
Consensus is central to several applications including collaborative ones which a wireless ad hoc network can facilitate for mobile users in terrains with no infrastructure support for communication. We solve the consensus problem in a sparse network in which a node can at times have no other node in its wireless range and useful end-to-end connectivity between nodes can just be a temporary feature that emerges at arbitrary intervals of time for any given node pair. Efficient one-to-many dissemination, essential for consensus, now becomes a challenge; enough number of destinations cannot deliver a multicast unless nodes retain the multicast message for exercising opportunistic forwarding. Seeking to keep storage and bandwidth costs low, we propose two protocols. An eventually relinquishing (\diamondsuit RC) protocol that does not store messages for long is used for attempting at consensus, and an eventually quiescent (\diamondsuit QC) one that stops forwarding messages after a while is used for concluding consensus. Use of the \diamondsuit RC protocol poses additional challenges for consensus, when the fraction, {f\over n}, of nodes that can crash is {1\over 4} \le {f\over n} < {1\over 2}. Consensus latency and packet overhead are measured through simulations and both decrease considerably even for a modest increase in network density.

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Index Terms:
Manet, network density, node connectivity, crash tolerance, consensus, quiescent multicasting, coverage assurance.
Citation:
Khaled Alekeish, Paul Ezhilchelvan, "Consensus in Sparse, Mobile Ad Hoc Networks," IEEE Transactions on Parallel and Distributed Systems, vol. 23, no. 3, pp. 467-474, March 2012, doi:10.1109/TPDS.2011.182
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