121488
20180318102523.0
10.1109/TNET.2007.901080
doi
12656
DAR
000254869100016
ISI
ARTICLE
Efficient Broadcasting Using Network Coding
2008
2008
Journal Articles
We consider the problem of broadcasting in an ad-hoc wireless network, where all nodes of the network are sources that want to transmit information to all other nodes. Our figure of merit is energy efficiency, a critical design parameter for wireless networks since it directly affects battery life and thus network lifetime. We prove that applying ideas from network coding allows to realize significant benefits in terms of energy efficiency for the problem of broadcasting, and propose very simple algorithms that allow to realize these benefits in practice. In particular, our theoretical analysis shows that network coding improves performance by a constant factor in fixed networks. We calculate this factor exactly for some canonical configurations. We then show that in networks where the topology dynamically changes, for example due to mobility, and where operations are restricted to simple distributed algorithms, network coding can offer improvements of a factor of log n, where n is the number of nodes in the network. We use the insights gained from the theoretical analysis to propose low-complexity distributed algorithms for realistic wireless ad-hoc scenarios, discuss a number of practical considerations, and evaluate our algorithms through packet level simulation.
Network Coding
Energy efficiency
Broadcast
Fragouli, Christina
161832
240968
Widmer, Joerg
159966
241364
Le Boudec, Jean-Yves
105633
241098
450-463
2
IEEE/ACM Transactions on Networking
16
205365
n/a
http://infoscience.epfl.ch/record/121488/files/master.pdf
oai:infoscience.tind.io:121488
article
IC
LCA
252614
US00024
LCA2
252453
U10427
LCA-ARTICLE-2008-026
EPFL
PUBLISHED
REVIEWED
ARTICLE