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Evolving Random Geometric Graph Models for Mobile Wireless Networks

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4 Author(s)
N. Karamchandani ; Dept. of ECE, UCSD, San Diego ; D. Manjunath ; D. Yogeshwaran ; S. K. Iyer

We consider evolving exponential RGGs in one dimension and characterize the time dependent behavior of some of their topological properties. We consider two evolution models and study one of them detail while providing a summary of the results for the other. In the first model, the inter-nodal gaps evolve according to an exponential AR(1) process that makes the stationary distribution of the node locations exponential. For this model we obtain the one-step conditional connectivity probabilities and extend it to the k-step case. Finite and asymptotic analysis are given. We then obtain the k-step connectivity probability conditioned on the network being disconnected. We also derive the pmf of the first passage time for a connected network to become disconnected. We then describe a random birth-death model where at each instant, the node locations evolve according to an AR(1) process. In addition, a random node is allowed to die while giving birth to a node at another location. We derive properties similar to those above.

Published in:

2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks

Date of Conference:

03-06 April 2006