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Delay Constrained Minimum Power Broadcasting in Wireless Networks

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3 Author(s)
Bulbul, K. ; Sabanci Univ., Istanbul ; Ercetin, O. ; Unluyurt, T.

We consider source-initiated broadcast session traffic in an ad hoc wireless network operating under a hard constraint on the end-to-end delay between the source and any node in the network. Our objective in this paper is to construct an energy-efficient broadcast tree that has a maximum depth Delta, where Delta represents the end-to-end delay constraint in the network. We first characterize the optimal solution to a closely related problem in dense networks using a dynamic programming formulation. The solution to the dynamic program indicates that there is a single optimal policy applicable to all dense networks. Elaborating on the insights provided by the structure of the problem in dense networks, we design an algorithm for finding a solution to the delay constrained minimum power broadcasting problem in sparse networks.

Published in:

Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks and Workshops, 2007. WiOpt 2007. 5th International Symposium on

Date of Conference:

16-20 April 2007