Impact of Buffer Management Solutions on MAC Layer Performance in Wireless Sensor Networks

Derviş AYGÖR  Shafqat Ur REHMAN  Fatih Vehbi ÇELEBİ  

Publication
IEICE TRANSACTIONS on Communications   Vol.E101-B   No.9   pp.2058-2068
Publication Date: 2018/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017EBP3389
Type of Manuscript: PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
WSNs,  MAC layer,  buffer management,  prioritization,  

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Summary: 
This paper is primarily concerned with the performance of Medium Access Control (MAC) layer plans for Wireless Sensor Networks (WSNs) in the context of buffer management solutions. We propose a novel buffer management solution that improves the general performance of MAC layer plans, in particular those crafted for WSNs. An analytical model is introduced in order to evaluate the cost of different buffer management solutions. The proposed buffer management solution, Single Queue Multi Priority (SQMP), is compared with well-known Single Queue Single Priority (SQSP) and Multi Queue Multi Priority (MQMP) buffer management solutions. All buffer management solutions are investigated in terms of throughput performance, utilization of the buffer and prioritization capabilities. Despite the relatively good performance of the different buffer management solutions in uncongested networks, the characteristic features of WSNs cause a degradation in the performance. In bursty conditions, SQMP controls and manages this degradation more effectively in comparison with the other two solutions. Simulations based on Omnet++ and Castalia confirm the performance improvements of our buffer management solution.