Protocol Design and Optimization for Delay/Fault-Tolerant Mobile Sensor Networks

While extensive studies have been carried out in the past several years for many sensor applications, they cannot be applied to the network with extremely low and intermittent connectivity, dubbed the Delay/Fault-Tolerant Mobile Sensor Network (DFT-MSN). Without end-to-end connections due to sparse network density and sensor node mobility, routing in DFT-MSN becomes localized and ties closely to medium access control, which naturally calls for merging Layer 3 and Layer 2 protocols in order to reduce overhead and improve network efficiency. DFT-MSN is fundamentally an opportunistic network, where the communication links exist only with certain probabilities and become the scarcest resource. At the same time, the sensor nodes in DFT-MSN have very limited battery power like those in other sensor networks. Clearly, there is a tradeoff between link utilization and energy efficiency. To address this tradeoff, we develop a cross-layer data delivery protocol for DFT-MSN, which includes two ...

• Type: Conference
• Year: 2007
• Where: ICDCS
• Authors: Yu Wang, Hongyi Wu, Feng Lin, Nian-Feng Tzeng
• Keywords: Distributed And Parallel Computing, ICDCS 2007, Sensor, Sensor Networks, Sensor Nodes