DocumentCode :
1697261
Title :
Variable bandwidth allocation scheme for energy efficient wireless sensor network
Author :
Cho, SeongHwan ; Kim, Kee-Eung
Author_Institution :
Korea Adv. Inst. of Sci. & Technol., Daejon, South Korea
Volume :
5
fYear :
2005
Firstpage :
3314
Abstract :
Increasing the lifetime of wireless sensors is essential for the proliferation of wireless sensor networks in various environments. In this paper, the relationship between bandwidth and energy consumption is exploited to increase the lifetime of the sensors. A variable bandwidth allocation scheme that uses time-frequency slot assignment is proposed to reduce the energy consumption of a collaborative sensor network which has large spatial variation in node density and event rates. To assign the time-frequency slots to the sensor network, a novel algorithm is presented, which results in significant energy savings over the conventional constant bandwidth allocation scheme.
Keywords :
access protocols; bandwidth allocation; wireless sensor networks; bandwidth/energy consumption relationship; collaborative sensor network; energy efficient MAC protocols; energy efficient wireless sensor network; event rate variation; node density spatial variation; sensor lifetime increase; time-frequency slot assignment; variable bandwidth allocation scheme; Bandwidth; Channel allocation; Collaboration; Energy consumption; Energy efficiency; Media Access Protocol; Sensor phenomena and characterization; Time division multiple access; Time frequency analysis; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
Type :
conf
DOI :
10.1109/ICC.2005.1495035
Filename :
1495035
Link To Document :
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