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Target transmission radius over LMST for energy-efficient broadcast protocol in ad hoc networks

机译:Ad hoc网络中用于节能广播协议的LMST上的目标传输半径

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We investigate minimum energy broadcasting problem where mobile nodes have the capability to adjust their transmission range. The power consumption for two nodes at distance r is rα + c, where α ≥ 2 and c is a constant that includes signal processing and minimal reception power. We show that, for c > 0 (which is realistic assumption), it is not optimal to minimize transmission range. Furthermore, we demonstrate that there exists an optimal radius, computed with a hexagonal tiling of the network area that minimizes the power consumption. For α > 2 and c > 0, the optimal radius is r = α√(2c/α-2), which is derived theoretically, and confirmed experimentally. We propose also a localized broadcast algorithm TR-LBOP that takes this optimal radius into account. This protocol is experimentally shown to be efficient compared to existing localized protocol LBOP and globalized BIP protocol. Most importantly, TR-LBOP is shown to have limited energy overhead with respect to BIP for all network densities, which is not the case with LBOP whose overhead explodes for higher densities.
机译:我们研究了最小能量广播问题,其中移动节点具有调整其传输范围的能力。距离为r的两个节点的功耗为r α + c,其中α≥2,并且c是一个包括信号处理和最小接收功率的常数。我们表明,对于c> 0(这是现实的假设),最小化传输范围并不是最佳的。此外,我们证明了存在一个最佳半径,该半径由网络区域的六边形平铺计算得出,可最大程度地降低功耗。对于α> 2和c> 0,最佳半径为r =α√(2c /α-2),这是理论推导并通过实验确定的。我们还提出了一种本地广播算法TR-LBOP,该算法考虑了该最佳半径。实验证明,与现有的本地化协议LBOP和全球化的BIP协议相比,该协议是有效的。最重要的是,对于所有网络密度,TR-LBOP相对于BIP而言具有有限的能量开销,而对于带宽更高的LBOP而言,情况并非如此。

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