Energy Efficiency and Trade - off with Delay in Jamming - Resistant Collaborative Wireless


NAVARANGE, NAKUL. Energy Efficiency and Trade-off with Delay in JammingResistant Collaborative Wireless Broadcast Networks. (Under the direction of Dr. Huaiyu Dai). We study collaborative multi-channel wireless broadcast networks where nodes that have completely obtained the message being broadcast act as relays and transmit the same message to facilitate collaborative broadcast. Our study is conducted in the context of jamming-resistant networks based on Uncoordinated Frequency Hopping, where all the nodes hop over a large number of channels randomly and independently of each other. As the first step towards understanding such Collaborative Networks, we study Ideal Collaborative Networks, which ignore the relay accumulation process in practice. We focus on energy consumption of these networks and find the optimal number of transmitters that a collaborative network should deploy for message broadcast in order to minimize the network energy consumption. We further explore the dependence of this quantity on important network parameters such as the network size and the number of channels, as well as its scaling behavior. We find that the optimal number of transmitters scales only with the number of available channels; it increases with network size initially but approaches a constant value in asymptotically large networks. We also examine trade-off between network energy consumption and broadcast delay and demonstrate how to achieve the desired tradeoff. We then study Practical Collaborative Networks, which feature accumulation of the relays, and obtain the corresponding results regarding optimal number of transmitters. Based on these results, we find that an Ideal Collaborative Network is a good representation of the corresponding practical network and that analysis of Ideal Collaborative Networks offers important insights into practical collaborative networks. Our results indicate that collaboration significantly enhances energy efficiency. There are two necessities for collaborative networks in our study: they need to control the number of relays (preferably around the optimal value) and they further need to determine the end of broadcast (as quickly as possible). However, it is challenging to accomplish either goal in practice, especially in multi-channel networks and without a central authority. We present a distributed and energy-efficient protocol that fulfills these two requirements. Energy Efficiency and Trade-off with Delay in Jamming-Resistant Collaborative Wireless Broadcast Networks

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@inproceedings{Navarange2012EnergyEA, title={Energy Efficiency and Trade - off with Delay in Jamming - Resistant Collaborative Wireless}, author={Nakul Navarange and Huaiyu Dai}, year={2012} }