Power consumption analysis of priority-based service differentiation scheme for LR-WPANs. Issue 6 (2nd June 2016)

• Record Type: Journal Article
• Authors: Kim, Meejoung; Hwang, Eenjun
• Is Part Of: International journal of electronics. Volume 103:Issue 6(2016)
• Page Start: 1018
• Page End: 1028
• Publication Date: 2016-06-02
• Subjects: Sensor network -- power consumption -- service differentiation -- Markov chain -- contention window; Electronics -- Periodicals; Electronic control -- Periodicals; 621.381
• DOI: 10.1080/00207217.2015.1082638
• Languages: English
• ISSNs: 0020-7217

Abstract

ABSTRACT: In this paper, we investigate the effect of service differentiation on the power consumption in contention period of IEEE 802.15.4 sensor networks. Power consumption is analysed for two different service differentiation schemes under non-saturation condition. The two service differentiation schemes are the differentiation by the backoff exponent (BED) and differentiation by the contention window (CWD), which provide multilevel differentiated services in beacon-enabled mode with slotted carrier sense multiple access/collision avoidance (CSMA/CA) algorithm. The analysis is based on the stationary probabilities of a discrete-time Markov chain, which is a model of CSMA/CA describing the state of a head packet of a device. Numerical results show that CWD uses the power more efficiently and performs better in terms of throughput, while BED more differentiates the service.