IEEE 802.15.4 MAC for clustered WSNs with a directional framework
by Md. Asdaque Hussain; Md. Nasre Alam; Kyung Sup Kwak
International Journal of Sensor Networks (IJSNET), Vol. 15, No. 1, 2014

Abstract: This paper exploits the directionality in the wireless sensor network (WSN) by using single-beam and multibeam directional antennas. We mount a multibeam smart antenna (MBSA) with a main sink cluster head (CH), whereas other child sink CHs and end devices use single-beam sector antennas. The unique reception and transmission property of these antennas requires a sufficient modification to suit omni mode MAC protocols. We choose IEEE 802.15.4 as the platform for the proposed MAC design and analyse the effects of these antennas on the current superframe structure. We simulate the modified MAC protocol by using the OPNET modeller under varying traffic loads and an increasing number of nodes. We find an increase in network performance in terms of delays and energy consumption and a simultaneous decrease in the level of urgency.

Online publication date: Sun, 12-Oct-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Sensor Networks (IJSNET):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com