DocumentCode :
64954
Title :
Aggregation Latency-Energy Tradeoff in Wireless Sensor Networks with Successive Interference Cancellation
Author :
Hongxing Li ; Chuan Wu ; Dongxiao Yu ; Qiang-Sheng Hua ; Lau, Francis C. M.
Author_Institution :
Dept. of Comput. Sci., Univ. of Hong Kong, Hong Kong, China
Volume :
24
Issue :
11
fYear :
2013
fDate :
Nov. 2013
Firstpage :
2160
Lastpage :
2170
Abstract :
Minimizing latency and energy consumption is the prime objective of the design of data aggregation in battery-powered wireless networks. A tradeoff exists between the aggregation latency and the energy consumption, which has been widely studied under the protocol interference model. There has been, however, no investigation of the tradeoff under the physical interference model that is known to capture more accurately the characteristics of wireless interferences. When coupled with the technique of successive interference cancellation, by which a receiver may recover signals from multiple simultaneous senders, the model can lead to much reduced latency but increased energy usage. In this paper, we investigate the latency-energy tradeoff for data aggregation in wireless sensor networks under the physical interference model and using successive interference cancellation. We present theoretical lower bounds on both latency and energy as well as their tradeoff, and give an efficient approximation algorithm that can achieve the asymptotical optimum in both aggregation latency and latency-energy tradeoff. We show that our algorithm can significantly reduce the aggregation latency, for which the energy consumption is kept at its lowest possible level.
Keywords :
approximation theory; interference suppression; radiofrequency interference; sensor fusion; telecommunication power management; wireless sensor networks; aggregation latency-energy tradeoff; battery powered wireless network; data aggregation; efficient approximation algorithm; energy consumption; physical interference model; successive interference cancellation; wireless sensor network; Delay; Energy consumption; Interference cancellation; Receivers; Silicon carbide; Wireless sensor networks; Data aggregation; latency-energy tradeoff; successive interference cancellation; wireless sensor network;
fLanguage :
English
Journal_Title :
Parallel and Distributed Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
1045-9219
Type :
jour
DOI :
10.1109/TPDS.2012.314
Filename :
6342881
Link To Document :
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