Asymptotic analysis of multistage cooperative broadcast in wireless networks
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
Energy-Efficient Strategies for Cooperative Communications in Wireless Sensor Networks
SENSORCOMM '07 Proceedings of the 2007 International Conference on Sensor Technologies and Applications
Alternating opportunistic large arrays in broadcasting for network lifetime extension
IEEE Transactions on Wireless Communications
Energy-efficient broadcasting with cooperative transmissions in wireless sensor networks
IEEE Transactions on Wireless Communications
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
On the power efficiency of cooperative broadcast in dense wireless networks
IEEE Journal on Selected Areas in Communications
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We propose a broadcast protocol that is based on a form of cooperative transmission called the Opportunistic Large Array (OLA). Multiple SNR (or transmission) thresholds are used to define mutually exclusive sets of OLAs, such that the union of the sets includes all the nodes in the network. The new protocol, termed Alternating OLA with Transmission Threshold (A-OLA-T), exercises a different set of OLAs on each consecutive broadcast from the same sink until all sets have transmitted once. Then the sequence repeats. Thus, broadcasts consume energy efficiently and uniformly over the network, and A-OLA-T is especially well suited for static networks. The transmission thresholds are optimized to maximize the network life if broadcasts were the only transmissions. In this paper, we first optimize triples of broadcasts, and then extend the optimization for a higher number of broadcasts.