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Calculation of the Duty Cycle for BECA

by Chiranjib Patra, Sourish Mullick
"... Consumption of energy is one of the major problems in wireless sensor network, as sensor nodes driven on battery power. Therefore, it is intended to minimize the power consumption by putting the wireless interface of the sensor nodes in low power sleep mode. Wireless sensor networks constructed with ..."
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consumption in duty cycle. In this paper steady state probability of sensor nodes are analyzed and derived, i.e., sleep, listen, and active states, in terms of traffic characteristics and timer values, i.e., sleep timer, listen timer, and active timer. This work can be a guideline for appropriate timer

X-mac: A short preamble mac protocol for duty-cycled wireless sensor networks

by Michael Buettner, Gary V. Yee, Eric Anderson, Richard Han - in SenSys , 2006
"... In this paper we present X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols developed for duty-cycled WSNs such as B-MAC, which is the default MAC protocol for TinyOS, employ an extended preamble and preamble sampling. While this “low power listening ” approa ..."
Abstract - Cited by 360 (0 self) - Add to MetaCart
In this paper we present X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols developed for duty-cycled WSNs such as B-MAC, which is the default MAC protocol for TinyOS, employ an extended preamble and preamble sampling. While this “low power listening

Duty Cycle Adaptation with Respect to Traffic

by Mario Neugebauer, Jörn Plönnigs, Klaus Kabitzsch - in Proceedings of the 10th International Conference on Emerging Technologies and Factory Automation (ETFA 2005 , 2005
"... this paper an adaptation algorithm for th e duty cycle adjus tment during runtime of thes ens or netwo rk is propos ed. Thereby, the traffic originating froms en s or nodes is monitored in the relay node. Subs equently, the relay node evaluates the traffic whether the duty c ycle has to be changed. ..."
Abstract - Cited by 3 (1 self) - Add to MetaCart
this paper an adaptation algorithm for th e duty cycle adjus tment during runtime of thes ens or netwo rk is propos ed. Thereby, the traffic originating froms en s or nodes is monitored in the relay node. Subs equently, the relay node evaluates the traffic whether the duty c ycle has to be changed

Ultra-Low Duty Cycle MAC with Scheduled Channel Polling

by Wei Ye, Fabio Silva, John Heidemann - In Proceedings of the Fourth International Conference On Embedded Networked Sensor Systems (SenSys 2006 , 2006
"... Energy is a critical resource in sensor networks. MAC protocols such as S-MAC and T-MAC coordinate sleep schedules to reduce energy consumption. Recently, lowpower listening (LPL) approaches such as WiseMAC and B-MAC exploit very brief polling of channel activity combined with long preambles before ..."
Abstract - Cited by 195 (3 self) - Add to MetaCart
each transmission, saving energy particularly during low network utilization. Synchronization cost, either explicitly in scheduling, or implicitly in long preambles, limits all these protocols to duty cycles of 1–2%. We demonstrate that ultra-low duty cycles of 0.1% and below are possible with a new

The Duty Cycle of GRS 1915+105

by O. Vilhu, D. Hannikainen , 2002
"... Abstract. We propose a scenario for a periodic filling and emptying of the accretion disc of GRS 1915+105, by computing the mass transfer rate from the donor and comparing it with the observed accretion rate (see the full paper [3]). The binary parameters found by [1] predict evolutionary expansion ..."
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of the donor along the giant branch with a conservative mass transfer rate (1 – 2) × 10 −8 M ⊙ yr −1. This reservoir can support the present observed accretion rate with a duty cycle 0.05 – 0.1 (the active time as a fraction of the total life time). The viscosity time scale at the circularization radius (15

Binary addressing technique with duty cycle control for LCDs

by T. N. Ruckmongathan, M. Govind, S. V. Ashoka, G. Deepak - IEEE Trans. Electron Devices , 2005
"... Abstract—Introduction of duty cycle in the binary addressing technique is proposed to enable integration of liquid crystal display drivers with a digital system in a single chip. An analysis of this technique with duty-cycle control is presented. Effects of dutycycle control on brightness uniformity ..."
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Abstract—Introduction of duty cycle in the binary addressing technique is proposed to enable integration of liquid crystal display drivers with a digital system in a single chip. An analysis of this technique with duty-cycle control is presented. Effects of dutycycle control on brightness

Duty cycle of Doppler ground-based asteroseismic observations

by Mosser Benoît , 2006
"... We report the observations of the clear sky fraction at the Concordia station during winter 2006, and derive from it the duty cycle for astronomical observations. Performance in duty cycle and observation duration promotes Dome C for efficient asteroseismic observations. This performance is analyzed ..."
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We report the observations of the clear sky fraction at the Concordia station during winter 2006, and derive from it the duty cycle for astronomical observations. Performance in duty cycle and observation duration promotes Dome C for efficient asteroseismic observations. This performance

A Simple BATSE Measure of GRB Duty Cycle

by Jon Hakkila, Robert D. Preece, Geoffrey N. Pendleton , 2000
"... Abstract. We introduce a definition of gamma-ray burst (GRB) duty cycle that describes the GRB’s efficiency as an emitter; it is the GRB’s average flux relative to the peak flux. This GRB duty cycle is easily described in terms of measured BATSE parameters; it is essentially fluence divided by the q ..."
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Abstract. We introduce a definition of gamma-ray burst (GRB) duty cycle that describes the GRB’s efficiency as an emitter; it is the GRB’s average flux relative to the peak flux. This GRB duty cycle is easily described in terms of measured BATSE parameters; it is essentially fluence divided

Opportunistic forwarding in wireless networks with duty cycling

by Prithwish Basu - in Proc. of ACM Workshop on Challenged Networks (CHANTS , 2008
"... Opportunistic forwarding, by which data is randomly relayed to a neighbor based on local network information, is a fault-tolerant distributed algorithm particularly useful for challenged ad hoc and sensor networks where it is difficult to obtain global topology information because of frequent disrup ..."
Abstract - Cited by 18 (7 self) - Add to MetaCart
disruptions. Also, duty cycling is a common technique that constrains the RF operations of wireless devices for saving the battery energy and thus extending the longevity of the network. The combination of opportunistic forwarding and duty cycling is a useful approach for wireless ad hoc and sensor networks

The ContikiMAC Radio Duty Cycling Protocol

by Adam Dunkels , 2011
"... Low-power wireless devices must keep their radio transceivers off as much as possible to reach a low power consumption, but must wake up often enough to be able to receive communication from their neighbors. This report describes the ContikiMAC radio duty cycling mechanism, the default radio duty cy ..."
Abstract - Cited by 32 (1 self) - Add to MetaCart
Low-power wireless devices must keep their radio transceivers off as much as possible to reach a low power consumption, but must wake up often enough to be able to receive communication from their neighbors. This report describes the ContikiMAC radio duty cycling mechanism, the default radio duty
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