Adaptive media service framework for health monitoring
Proceedings of the Third International Conference on Internet Multimedia Computing and Service
ROCHAS: robotics and cloud-assisted healthcare system for empty nester
BodyNets '13 Proceedings of the 8th International Conference on Body Area Networks
A lightweight distributed scheme for mitigating inter-user interference in body sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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We present a simple but effective handoff protocol that enables continuous monitoring of ambulatory patients at home by means of resource-limited sensors. Our proposed system implements a 2-tier network: one created by wearable sensors used for vital signs collection, and another by a point-to-point link established between the body sensor network coordinator device and a fixed access point (AP). Upon experiencing poor signal reception in the latter network tier when the patient moves, the AP may instruct the sensor network coordinator to forward vital signs data through one of the wearable sensor nodes acting as a temporary relay if the sensor-AP link has a stronger signal. Our practical implementation of the proposed scheme reveals that this relayed data operation decreases packet loss rate down to 20% of the value otherwise obtained when solely using the point-to-point, coordinator-AP link. In particular, the wrist location yields the best results over alternative body sensor positions when patients walk at a 0.5 m/s.