Optimal Backoff Exponent estimation for environmental monitoring IEEE 802.15.4 star-topology sensor networks

Chatzistavros, Evaggelos; Stamatelos, G.

doi:10.1109/ist.2014.6958465

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…On the other hand, in the beacon-enabled mode, coordinator transmits a superframe consisting of active and inactive periods, which are bounded by the beacons. The active part of the superframe is further subdivided into CAP and contention-free period (CFP) [30,31]. During the inactive period, nodes tend to sleep to conserve energy.…”

Section: Related Workmentioning

confidence: 99%

An Adaptive Backoff Mechanism for IEEE 802.15.4 Beacon‐Enabled Wireless Body Area Networks

Henna

Sarwar

2018

Wireless Communications and Mobile Computing

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Carrier sense multiple access mechanism with collision avoidance (CSMA/CA) in IEEE 802.15.4-based wireless body area networks (WBANs) may impair the transmission reliability of emergency traffic under high traffic loads, which may result in loss of high valued medical information. Majority of the recent proposals recommend an early retransmission of failed frame while ignoring the history of past failed transmissions. More importantly, these proposals do not consider the number of failed transmissions experienced by each sensor node, thereby affecting the reliability of retransmissions. In this paper, we propose a dynamic retransmission adaptive intelligent MAC (RAI-MAC) scheme. In our proposed scheme retransmission class of each sensor node is decided by the coordinator according to the number of failed transmissions of each node as observed by the coordinator during the last superframe. Based on the retransmission class received from the coordinator, each node adjusts its next backoff value. The proposed scheme increases the probability of successful frame retransmissions without incurring extra overhead. The simulation results prove that the proposed scheme based on its adaptive retransmission mechanism achieves higher average throughput and average end-to-end delay, while not compromising on energy efficiency as compared to the IEEE 802.15.4 and Block Acknowledgment (Block Ack). Moreover, our scheme appears more stable in terms of average throughput, end-to-end delay, and energy efficiency under different values of beacon order (BO) and superframe order (SO).

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Section: Related Workmentioning

confidence: 99%

An Adaptive Backoff Mechanism for IEEE 802.15.4 Beacon‐Enabled Wireless Body Area Networks

Henna

Sarwar

2018

Wireless Communications and Mobile Computing

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“…In order for the 150 kb/s rate to be achieved, more 25-bytes packets need to be injected to the network. As shown in [20], the amount of transmitted packets depends on the value of the backoff exponent-BE index. For fixed datarate and number of nodes, the BE value must be decreased in order for more, smaller-size packets to be transmitted.…”

Section: Model Evaluationmentioning

confidence: 99%

Performance Evaluation of IEEE 802.15.4 Sensor Chains in an Integrated Water Monitoring Framework

Chatzistavros

Stamatelos

2015

Wireless Pers Commun

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In the context of the CYBERSENSORS integrated water management research project, we derive a numerical modelling approach for throughput estimation in an IEEE 802.15.4 wireless sensor network. We focus on the standard-compliant slotted carrier sense multiple access with collision avoidance algorithm. Our approach takes into account the number of nodes in a cluster network, as well as the transmitted packet size. The configuration examined is a chain network formed by wireless sensor nodes where the first node is the source of data packets and the last is the traffic sink. Theoretical estimations are verified using the ns-2 network simulator. We also look into the 3G communication aspects of the platform involved. Hardware implementation and simulation tools are used here to derive a number of design guidelines that will define the system's architecture.

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Optimal Backoff Exponent estimation for environmental monitoring IEEE 802.15.4 star-topology sensor networks

Cited by 2 publications

References 7 publications

An Adaptive Backoff Mechanism for IEEE 802.15.4 Beacon‐Enabled Wireless Body Area Networks

An Adaptive Backoff Mechanism for IEEE 802.15.4 Beacon‐Enabled Wireless Body Area Networks

Performance Evaluation of IEEE 802.15.4 Sensor Chains in an Integrated Water Monitoring Framework

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