Optimized Mobile Sink Trajectory for Efficient Energy Consumption in WSNs
- Authors
- 이정규
- Issue Date
- Oct-2009
- Publisher
- Ubiquitous Robots and Ambient Intelligence
- Citation
- The 6thInternational Conference on Ubiquitous Robots and Ambient Intelligence (URAI 2009)
- Indexed
- OTHER
- Journal Title
- The 6thInternational Conference on Ubiquitous Robots and Ambient Intelligence (URAI 2009)
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/40766
- Abstract
- Wireless Sensor network is emerging very
rapidly due to its vast number of applications in every
field of human life. The network is usually composed of
energy constrained sensor nodes and resource unlimited
sink node. The sensor nodes collect data from the
environment and send data to sink via multi-hopping.
Thus, the nodes around the vicinity of sink feels great
burden of relaying all the sensor nodes’ data, as well as
sending their own data. This creates hotspot problem
causing some sensor nodes to deplete their energies
earlier, network lifetime is reduced and network becomes
disconnected. To eliminate this problem, sink is made to
move. A number of mobilesink strategies have already
been proposed, but the need of good optimum strategy is
still needed. In this paper, we propose an optimized
Mobile Sink Trajectory in order to collect the data from
sensors in an energy efficient manner. We propose the
spiralmovement of the mobile sink and argue that it
provides proficient results in balancing load consumption
fairly. We compare our spiral movement strategy with
two other strategies; (1) when mobile sink moves along
the periphery of the network, and (2) when the sink is
statically placed at the centre of the network. Simulation
results confirm that our proposed approach outperforms
the others.
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