title: Enhancing the reliability of head nodes in underwater sensor networks.
abstract: Underwater environments are quite different from terrestrial environments in terms of the communication media and operating conditions associated with those environments. In underwater sensor networks, the probability of node failure is high because sensor nodes are deployed in harsher environments than ground-based networks. The sensor nodes are surrounded by salt water and moved around by waves and currents. Many studies have focused on underwater communication environments in an effort to improve the data transmission throughput. In this paper, we present a checkpointing scheme for the head nodes to quickly recover from a head node failure. Experimental results show that the proposed scheme enhances the reliability of the networks and makes them more efficient in terms of energy consumption and the recovery latency compared to the previous scheme without checkpointing.
authors.affiliation: School of Computer Science and Engineering, Seoul National University, Seoul 151-742, Korea. hmin@os.snu.ac.kr
authors.forename: Hong
authors.initials: H
authors.lastname: Min
authors.forename: Yookun
authors.initials: Y
authors.lastname: Cho
authors.forename: Junyoung
authors.initials: J
authors.lastname: Heo
mesh_terms: D000465:Algorithms; D003195:Computer Communication Networks / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers; D014867:Water
chemical_list: D014867:Water