Paper Info
Title
An adaptive collision resolution scheme for energy efficient communication in IEEE 802.15.4 networks
Abstract
IEEE 802.15.4 provides a widely accepted solution for low-cost and low-power wireless communications, and it is known to be applicable to many types of WSN application scenarios. To enhance energy efficiency and throughput of sensor nodes, many CSMA/CA schemes based on IEEE 802.15.4 have been proposed. However, they still suffer from unnecessary waste of energy and bandwidth due to inefficient backoff management. In order to overcome these problems, we propose an enhancement to existing schemes, called adaptive collision resolution (ACR). ACR appropriately adapts backoff exponent (BE) to the current network contention level based on physical and link-layer measurements. In addition, it adjusts backoff periods (BP) to avoid meaningless backoffs and additional clear channel assessments (CCAs) by using the estimated time remaining until the channel becomes idle. To verify the feasibility and applicability of our scheme, we studied mathematical analysis and tested it on the Matlab and USRP/GNU Radio testbed. We also performed simulation study using OPNET, and our simulation results indicate that ACR shows improved energy efficiency and throughput performance over existing schemes.
Year
DOI
Venue
2014
10.1016/j.comnet.2013.08.019
Computer Networks
Keywords
DocType
Volume
simulation study,GNU Radio testbed,adapts backoff exponent,energy efficient communication,CA scheme,simulation result,additional clear channel assessment,inefficient backoff management,throughput performance,backoff period,adaptive collision resolution scheme,energy efficiency
Journal
58,
ISSN
Citations 
PageRank 
1389-1286
4
0.46
References 
Authors
10
4
Name
Order
Citations
PageRank
Kyoung-Hak Jung1172.08
Hyo-Ryun Lee240.80
Wan-Seon Lim3718.39
Young-joo Suh447858.07