Key Factors for a Proper Available-Bandwidth-Based Flow Admission Control in Ad-Hoc Wireless Sensor Networks

Muhammad Omer Farooq, Thomas Kunz

Abstract

In this paper, first, we present our simulation studies that help to outline key factors for a proper available-bandwidth-based flow admission control in ad-hoc Wireless Sensor Networks (WSNs). In most cases, WSNs use the IEEE 802.15.4 standard, therefore our simulation studies are based on the same standard. The identified key factors are: (i) the overheads (back-off, retransmission, contention window, ACK packet, and ACK waiting time) associated with the unslotted IEEE 802.15.4 Carrier Sense Multiple Access Collision Avoidance (CSMA-CA) MAC layer protocol reduce the amount of available bandwidth, (ii) the impact of the MAC layer overheads on a node's available bandwidth is a function of the number of active transmitters and data traffic load within the interference range of the node, (iii) contention count on a node that is not on a flow's data forwarding path is a function of the number of active transmitters (along the flow's data forwarding path) within the interference range of the node, and (iv) a flow's intra-flow contention count on a node (along the flow's data forwarding path) depends on the hop-count distance of the node from the source and the destination nodes, and the node's interference range. Second, we present a survey of state-of-the-art flow admission control algorithms for ad-hoc wireless networks. The survey demonstrates that the state-of-the-art flow admission control algorithms do not completely consider the key identified factors or make incorrect assumptions about them. Third, we propose techniques that an available-bandwidth-based flow admission control algorithm can use to incorporate the key identified factors. Hence, the work presented in this paper can serve as a basis of a more effective available-bandwidth-based flow admission control algorithm for ad-hoc wireless networks.
Original languageEnglish
Title of host publicationAd-hoc Networks and Wireless
EditorsMiguel Garcia Pineda, Jaime Lloret, Symeon Papavassiliou, Stefan Ruehrup, Carlos Becker Westphall
Number of pages15
Volume8629
Place of PublicationBerlin, Heidelberg
PublisherSpringer Berlin Heidelberg
Publication date10.02.2015
Pages246-260
ISBN (Print)978-3-662-46337-6
ISBN (Electronic)978-3-662-46338-3
DOIs
Publication statusPublished - 10.02.2015
Externally publishedYes
Event2014 International Conference on Ad-Hoc Networks and Wireless - Benidorm, Spain
Duration: 22.06.201427.06.2014

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