Utilization based duty cycle tuning MAC protocol for wireless sensor networks
Shih-Hsien Yang
Hung-Wei Tseng
Wu, E.H.-K.
Gen-Huey Chen
Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei;
This paper appears in: Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE
Publication Date: 2-2 Dec. 2005
Volume: 6,
On page(s): 5 pp.-3262
Location: St. Louis, MO,
ISBN: 0-7803-9414-3
INSPEC Accession Number: 8956176
Digital Object Identifier: 10.1109/GLOCOM.2005.1578377
Current Version Published: 2006-01-23
Abstract
In this paper, we propose U-MAC, a medium access control protocol designed for wireless sensor networks. Nowadays, wireless sensor network are formed by a great quantity of sensor nodes, which are generally battery-powered and may not recharge easily. Consequently, how to prolong the lifetime of the nodes is an important issue while designing a MAC protocol. However, lowering the energy consumption may result in higher latency. Addressing on such tradeoff, U-MAC balances the tradeoff by utilization based tuning of duty cycle and selective sleeping after transmission. The experiment results show that our proposed U-MAC saves energy about 43% and reduce latency by 65% from S-MAC in a chain topology. In the cross topology, U-MAC also achieves 32% energy saving and 45% latency reduction from S-MAC
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