Communications Laboratory, Rochester Institute of Technology, 79 Lomb Memorial Drive, Rochester, NY 14623, USA.
Sensors (Basel). 2012 Sep 26;12(10):13088-108. doi: 10.3390/s121013088.
Global routing protocols in wireless body area networks are considered. Global routing is augmented with a novel link cost function designed to balance energy consumption across the network. The result is a substantial increase in network lifetime at the expense of a marginal increase in energy per bit. Network maintenance requirements are reduced as well, since balancing energy consumption means all batteries need to be serviced at the same time and less frequently. The proposed routing protocol is evaluated using a hardware experimental setup comprising multiple nodes and an access point. The setup is used to assess network architectures, including an on-body access point and an off-body access point with varying number of antennas. Real-time experiments are conducted in indoor environments to assess performance gains. In addition, the setup is used to record channel attenuation data which are then processed in extensive computer simulations providing insight on the effect of protocol parameters on performance. Results demonstrate efficient balancing of energy consumption across all nodes, an average increase of up to 40% in network lifetime corresponding to a modest average increase of 0.4 dB in energy per bit, and a cutoff effect on required transmission power to achieve reliable connectivity.
研究了无线体域网中的全局路由协议。全局路由通过一种新的链路成本函数进行增强，旨在平衡网络中的能耗。其结果是网络寿命大大延长，而每比特的能量仅略有增加。网络维护要求也降低了，因为平衡能耗意味着所有电池都需要同时进行维护，而且频率也降低了。该路由协议使用包括多个节点和接入点的硬件实验设置进行了评估。该设置用于评估网络架构，包括体上接入点和体上接入点以及具有不同数量天线的体上接入点。在室内环境中进行实时实验以评估性能增益。此外，该设置还用于记录信道衰减数据，然后在广泛的计算机模拟中对其进行处理，从而深入了解协议参数对性能的影响。结果表明，所有节点的能耗都得到了有效平衡，网络寿命平均增加了 40%，相应的每比特能量平均增加了 0.4 dB，并且对实现可靠连接所需的传输功率有截止效应。
