Ntouni Georgia D, Lioumpas Athanasios S, Nikita Konstantina S
IEEE J Biomed Health Inform. 2014 Nov;18(6):1848-56. doi: 10.1109/JBHI.2014.2300151.
Implant devices are used to measure biological parameters and transmit their results to remote off-body devices. As implants are characterized by strict requirements on size, reliability, and power consumption, applying the concept of cooperative communications to wireless body area networks offers several benefits. In this paper, we aim to minimize the power consumption of the implant device by utilizing on-body wearable devices, while providing the necessary reliability in terms of outage probability and bit error rate. Taking into account realistic power considerations and wireless propagation environments based on the IEEE P802.l5 channel model, an exact theoretical analysis is conducted for evaluating several communication scenarios with respect to the position of the wearable device and the motion of the human body. The derived closed-form expressions are employed toward minimizing the required transmission power, subject to a minimum quality-of-service requirement. In this way, the complexity and power consumption are transferred from the implant device to the on-body relay, which is an efficient approach since they can be easily replaced, in contrast to the in-body implants.
植入式设备用于测量生物参数并将其结果传输到体外远程设备。由于植入物对尺寸、可靠性和功耗有严格要求，将协作通信概念应用于无线体域网有诸多益处。在本文中，我们旨在通过利用身体上的可穿戴设备来最小化植入式设备的功耗，同时在中断概率和误码率方面提供必要的可靠性。考虑到基于IEEE P802.15信道模型的实际功率考量和无线传播环境，针对可穿戴设备的位置和人体运动的几种通信场景进行了精确的理论分析。在满足最低服务质量要求的情况下，使用推导得出的闭式表达式来最小化所需的传输功率。通过这种方式，复杂性和功耗从植入式设备转移到身体上的中继设备，这是一种有效的方法，因为与体内植入物相比，它们可以很容易地被替换。
