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Original Articles

Sensing with One or with Four? A Comparison of Two IEEE 802.15.x Protocols for Use in Sensor Networks

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Pages 87-104 | Published online: 14 Feb 2007
 

Abstract

In this paper we compare the pertinent features of the two emerging technologies for wireless sensor networks: IEEE Standards 802.15.1 and 802.15.4. We review the main features of the MAC protocols defined by those standards, describe their operation, and compare them in terms of characteristics such as performance (access and end-to-end packet delays), bandwidth utilization, and scalability for the deployment of large networks. Our findings indicate that there is no clear winner in all categories; the best protocol (and the underlying technology) to use, are heavily dependent upon the requirements for a particular sensing application. While the main focus of our analysis is the MAC layer, certain important parameters of the Physical (PHY) layer are considered as well, together with some other networking aspects. The results of this analysis should be of interest to the designer and operators of wireless sensor networks.

Notes

1Note that 802.15.4. networks may operate in other frequency bands at 868 and 915MHz, but with much reduced data rates.

2In subsequent discussions we will use the latter term, in order to distinguish it from the Bluetooth piconet.

31. ZigBee Alliance. ZigBee specification. ZigBee Document 053474r06, Version 1.0, ZigBee Alliance, San Ramon, CA, June 2005.

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