Document Type
Conference Proceeding
Publisher
IEEE Press
Faculty
Faculty of Computing, Health and Science
School
School of Engineering / Centre for Communications Engineering Research
RAS ID
6046
Abstract
In the IEEE 802.15.4 medium access control (MAC) protocol for wireless sensor networks, a sensor node needs to associate with a coordinator before it starts sending or receiving data. The sensor node will mostly choose the nearest coordinator to associate with. However, this method is not suitable for a constantly moving sensor node because it will end up switching coordinators too often due to short connectivity time. The IEEE 802.15.4 has a simplistic and inadequate method of choosing a coordinator in this context. In this paper, we introduce a method to increase the mobile sensor node connectivity time with its co-ordinator in IEEE 802.15.4 beacon-enabled mode. Our method is based on the timestamp of the beacons received from the nearby coordinators and filtering weak beacon signals. By choosing the coordinator which has sent the most recent received beacon with good signal quality, we increase the moving node connectivity time with the coordinator. Our technique results in significant improvement by reducing the number of times the moving node switches coordinators. This increases the throughput and reduces the wasted power in frequent associations.
DOI
10.1109/ATNAC.2008.4783343
Access Rights
free_to_read
Comments
This is an Author's Accepted Manuscript of: Zen, K. , Habibi, D. , & Ahmad, I. (2008). Improving Mobile Sensor Connectivity Time in the IEEE 802.15.4 Networks. Proceedings of Australian Telecommunication Networks and Applications Conference. ATNAC 2008. (pp. 317-320). Adelaide, Australia. IEEE Press. Available here
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