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Performance Evaluation and Comparative Analysis of SubCarrier Modulation Wake-up Radio Systems for Energy-Efficient Wireless Sensor Networks

機(jī)譯：節(jié)能無線傳感器網(wǎng)絡(luò)的子載波調(diào)制喚醒無線電系統(tǒng)的性能評估和比較分析

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Energy-efficient communication is one of the main concerns of wireless sensor networks nowadays. A commonly employed approach for achieving energy efficiency has been the use of duty-cycled operation of the radio, where the node's transceiver is turned off and on regularly, listening to the radio channel for possible incoming communication during its on-state. Nonetheless, such a paradigm performs poorly for scenarios of low or bursty traffic because of unnecessary activations of the radio transceiver. As an alternative technology, Wake-up Radio (WuR) systems present a promising energy-efficient network operation, where target devices are only activated in an on-demand fashion by means of a special radio signal and a WuR receiver. In this paper, we analyze a novel wake-up radio approach that integrates both data communication and wake-up functionalities into one platform, providing a reconfigurable radio operation. Through physical experiments, we characterize the delay, current consumption and overall operational range performance of this approach under different transmit power levels. We also present an actual single-hop WuR application scenario, as well as demonstrate the first true multi-hop capabilities of a WuR platform and simulate its performance in a multi-hop scenario. Finally, by thorough qualitative comparisons to the most relevant WuR proposals in the literature, we state that the proposed WuR system stands out as a strong candidate for any application requiring energy-efficient wireless sensor node communications.
機(jī)譯：節(jié)能通信是當(dāng)今無線傳感器網(wǎng)絡(luò)的主要關(guān)注之一。實(shí)現(xiàn)能量效率的一種常用方法是使用無線電的占空比操作，其中節(jié)點(diǎn)的收發(fā)器定期關(guān)閉和打開，并在其導(dǎo)通狀態(tài)下偵聽無線電信道以了解可能的傳入通信。然而，由于無線收發(fā)器的不必要的激活，這種范例在低流量或突發(fā)流量的情況下表現(xiàn)不佳。作為一種替代技術(shù)，喚醒無線電（WuR）系統(tǒng)提供了有希望的節(jié)能網(wǎng)絡(luò)操作，其中僅通過特殊的無線電信號(hào)和WuR接收器按需激活目標(biāo)設(shè)備。在本文中，我們分析了一種新穎的喚醒無線電方法，該方法將數(shù)據(jù)通信和喚醒功能都集成到一個(gè)平臺(tái)中，從而提供了可重新配置的無線電操作。通過物理實(shí)驗(yàn)，我們表征了這種方法在不同發(fā)射功率水平下的延遲，電流消耗和總體工作范圍性能。我們還將介紹一個(gè)實(shí)際的單跳WuR應(yīng)用程序場景，并演示W(wǎng)uR平臺(tái)的第一個(gè)真正的多跳功能，并在多跳場景中模擬其性能。最后，通過與文獻(xiàn)中最相關(guān)的WuR提議進(jìn)行徹底的定性比較，我們指出，對于任何需要節(jié)能無線傳感器節(jié)點(diǎn)通信的應(yīng)用，擬議的WuR系統(tǒng)都是很強(qiáng)的候選者。

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