Date Added: Aug 2010
Reliable Data Transfer (RDT) is one of the key issues in Wireless Sensor Networks (WSNs) and can be achieved by using link-level re-transmissions and multipath routing. Another key issue is the scalability of WSNs. In this paper, the authors try to better understand and characterize/quantify the relationships between reliability and scalability, and identify possible design options for the future RDT protocols in large-scale WSNs. With this in mind, they first conducted actual experiments to characterize link reliability measures in an actual sensor network setting.