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Tracking Message Spread in Mobile Delay Tolerant Networks.
- Source :
- IEEE Transactions on Mobile Computing; Aug2015, Vol. 14 Issue 8, p1737-1750, 14p
- Publication Year :
- 2015
-
Abstract
- We consider a delay tolerant network under two message forwarding schemes—a non-replicative direct delivery scheme and a replicative epidemic routing scheme. Our objective is to track the degree of spread of a message in the network. Such estimation can be used for on-line control of message dissemination. With a homogeneous mobility model with pairwise i.i.d. exponential inter-meeting times, we rigorously derive the system dynamic and measurement equations for optimal tracking by a Kalman filter. Moreover, we provide a framework for tracking a large class of processes that can be modeled as density-dependent Markov chains. We also apply the same filter with a heterogeneous mobility, where the aggregate inter-meeting times exhibit a power law with exponential tail as in real-world mobility traces, and show that the performance of the filter is comparable to that with homogeneous mobility. Through customized simulations, we demonstrate the trade-offs and provide several insightful observations on how the number of observers impacts the filter performance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15361233
- Volume :
- 14
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Mobile Computing
- Publication Type :
- Academic Journal
- Accession number :
- 103665789
- Full Text :
- https://doi.org/10.1109/TMC.2014.2362746