ELIXIR: An Expedient Connection Paradigm for Self-Powered IoT Devices
ELIXIR: An Expedient Connection Paradigm for Self-Powered IoT Devices
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DOI：
10.1109/tcad.2023.3266724
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发表时间：
2023-11
影响因子：
2.9
通讯作者：
Chen Pan;Wen Zhang;Yanzhi Wang;Mimi Xie
中科院分区：
文献类型：
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作者：
Chen Pan;Wen Zhang;Yanzhi Wang;Mimi Xie
物联网设备通常在功率受限的情况下工作，如户外环境监测。考虑到成本和可持续性，从长远来看，能量收集技术更适合为物联网设备供电。由于收获功率本质上是微弱和瞬态的，物联网设备之间的连接不仅不能持续保持，而且也极难建立。为了通信，这些设备应该有一个同步的时间轴，这样发送者和接收者可以同时开始连接。然而，由于环境能量的暂态特性，易失性时间数据很容易被不稳定的电源所篡改，或被频繁的停电所完全破坏。因此，不同步的物联网设备需要花费大量的时间和精力来重新连接和通信，这进一步加剧了边缘网络的性能下降。为了适应物联网边缘无处不在的自供电场景，我们提出了ELIXIR，这是一种权宜之计连接范例，可以在自供电物联网设备的共同努力下快速自主同步。ELIXIR轻巧高效的特性使其能够轻松高效地集成到低功耗物联网设备中。实验结果表明，所提出的ELIXIR方法可以避免连接环路，并使连接速度比基线方法提高2.83倍和1.84倍。
IoT devices usually work under power-constrained scenarios like outdoor environmental monitoring. Considering the cost and sustainability, in the long run, energy-harvesting technology is preferable for powering IoT devices. Since harvesting power is intrinsically weak and transient, the connection between IoT devices not only cannot be maintained constantly but is also extremely difficult to be established. In order to communicate, those devices should have a synchronized timeline so that both transmitter and receiver can start connection simultaneously. Yet due to the transient nature of ambient energy, volatile time data can be easily tampered with by the unstable power supply or corrupted completely by frequent power outages. As a result, unsynchronized IoT devices require significant efforts in time and energy to reconnect and communicate, which further escalates the performance degradation of the edge network. To adapt to ubiquitous self-powered scenarios on the IoT edge, we propose ELIXIR, an expedient connection paradigm, to synchronize swiftly and autonomously in a joint effort for self-powered IoT devices. The lightweight and highly efficient natures enable ELIXIR to be integrated into low-power IoT devices easily and efficiently. The experimental results show that the proposed ELIXIR can avoid a connection loop and help speed up the connection $2.83\times $ and $1.84\times $ faster than baseline methods.