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ATMA: Advertisement-based TDMA Protocol for Bursty Traffic in Wireless Sensor Networks. Surjya Ray, Illker Demirkol, and Wendi Heinzeleman University of Rochester IEEE GLOBECOM 2010. Outline. Introduction Advertisement-based TDMA (ATAM) Simulations Conclusion. Introduction. - PowerPoint PPT Presentation
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ATMA: Advertisement-based TDMA Protocol for Bursty Traffic in Wireless Sensor NetworksSurjya Ray, Illker Demirkol, and Wendi Heinzeleman
University of Rochester
IEEE GLOBECOM 2010
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Outline
IntroductionAdvertisement-based TDMA (ATAM)SimulationsConclusion
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Introduction
Energy conservation is one of the primary goal for wireless sensor networks(WSNs).
The major cause of energy wasting is idle listening.
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Introduction
TDMA – based◦High energy efficient◦Need Synchronization◦Not easy dynamically change the frame length
Contention – based◦S-MAC◦T-MAC
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Introduction
S-MAC
T-MAC
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T-MAC
Activation event◦The reception of any data on the radio
◦The sensing of communicational on the radio
◦The knowledge, through overhearing prior RTS and CTS packets, that a data exchange of a neighbor has ended
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Introduction
T-MAC still waste energy◦Idle listening
Advertisement-based TDMA (ATMA)◦Variable traffic loading◦Reduce Idle listening
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ATMA
Overview
SYN
C
Frame length
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The Advertisement Period
Divided into many small slotsAll nodes are awaked
Advertisement Period
AD
V
Sensor ID and data slots
A-
Ack
S R
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The Advertisement Period
S R
C
D
E
Initial Slot Selection:
Actual Contention:
S,E
D D
AD
V A-
Ack AD
V A-
Ack
AD
V
FF F
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The Data Period
Divided into slotsAll nodes will sleep until
◦Sending ◦Receiving
Data Period
S R
DA
TA
AC
K
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DA
TA
AC
K
AC
K
The Data Period
Data Period
S RD
AT
A
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Sender can reserve n data slots
Simulations
Parameters Values
NS-2 2.29
Duration of ADV period of ATMA 5ms
Duration of one ADV slot 0.1ms
Duration of frames 236.4ms
Transmission range 100m
Carrier Sense range 200m
Total simulation time 200s
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Simulations
Single hop◦20 nodes and area size : 50*50m
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Simulations
Multi-hop◦312 nodes and area size is 700*700m
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Conclusion
The simulation results shows that ATAM outsperforms than other related works.
In the future, the authors will plan an analytical model for the ATMA and to optimize the length for the ATMA period of ATMA.
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