Quwaider Muhannad, Taghizadeh Mahmoud, Biswas Subir
Department of Computer Engineering, Jordan University of Science and Technology, Irbid, Jordan 22110-3030, Jordan.
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824-1226, USA.
EURASIP J Wirel Commun Netw. 2011 Jan;2011. doi: 10.1155/2011/280324.
This paper presents a stochastic modeling framework for store-and-forward packet routing in Wireless Body Area Networks () with postural partitioning. A prototype has been constructed for experimentally characterizing and capturing on-body topology disconnections in the presence of ultrashort range radio links, unpredictable RF attenuation, and human postural mobility. Delay modeling techniques for evaluating single-copy on-body DTN routing protocols are then developed. End-to-end routing delay for a series of protocols including opportunistic, randomized, and two other mechanisms that capture multiscale topological localities in human postural movements have been evaluated. Performance of the analyzed protocols are then evaluated experimentally and via simulation to compare with the results obtained from the developed model. Finally, a mechanism for evaluating the topological importance of individual on-body sensor nodes is developed. It is shown that such information can be used for selectively reducing the on-body sensor-count without substantially sacrificing the packet delivery delay.
本文提出了一种用于具有姿势分区的无线体域网（WBAN）中存储转发分组路由的随机建模框架。已构建了一个原型，用于在存在超短距离无线链路、不可预测的射频衰减和人体姿势移动性的情况下，通过实验表征和捕捉人体上的拓扑断开情况。然后开发了用于评估单副本人体上延迟容忍网络（DTN）路由协议的延迟建模技术。已经评估了一系列协议的端到端路由延迟，这些协议包括机会性、随机化协议以及其他两种捕捉人体姿势运动中多尺度拓扑局部性的机制。然后通过实验和仿真评估所分析协议的性能，以与从所开发模型获得的结果进行比较。最后，开发了一种评估人体上单个传感器节点拓扑重要性的机制。结果表明，此类信息可用于有选择地减少人体上的传感器数量，而不会大幅牺牲分组交付延迟。
