Sink discovery in location-free and mobile-sink wireless sensor networks

Searching for a sink and determining routing paths are challenging tasks in a mobile sink environment, especially in a location-free environment. Updating the sink location frequently by transmitting messages to preserve a route greatly increases the energy consumption of sensors. Therefore, methods...

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Bibliographic Details
Published in:Computer networks (Amsterdam, Netherlands : 1999) Netherlands : 1999), 2014-07, Vol.67, p.123-140
Main Authors: Chu, Wei-Cheng, Ssu, Kuo-Feng
Format: Article
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Computer systems and distributed systems. User interface
Energy consumption
Energy efficiency
Equipments and installations
Exact sciences and technology
Information retrieval. Graph
Location-free
Mobile communications networks
Mobile radiocommunication systems
Mobile sink
Radiocommunications
Routing
Sensors
Simulation
Software
Studies
Telecommunications
Telecommunications and information theory
Theoretical computing
Wireless sensor network
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Summary:Searching for a sink and determining routing paths are challenging tasks in a mobile sink environment, especially in a location-free environment. Updating the sink location frequently by transmitting messages to preserve a route greatly increases the energy consumption of sensors. Therefore, methods to lower updating costs should be investigated. In this study, a cluster-based mobile sink exploration (CMSE) scheme is developed to guide data packets efficiently to mobile sinks. In this scheme, a source node can identify the sink location without knowledge of node locations, and multiple routing paths are established from a sensor to the sink to enhance network longevity. Simulation results show that compared with the use of previous methods, using the CMSE scheme helps save more energy and increases network longevity under various scenarios.
ISSN:1389-1286
1872-7069
DOI:10.1016/j.comnet.2014.03.028