TBoPS: A Tree Based Distributed Beacon Only Period Scheduling Mechanism for IEEE 802.15.4

IEEE 802.15.4 standard specifies a beacon-enabled mode which provides a synchronization environment using beacon transmissions. However, this mode is designed for single hop networks and its use in multi-hop networks is not straight-forward. The main challenges of using beacon-enabled mode in multi-...

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Vydáno v:2012 IEEE 8th International Conference on Distributed Computing in Sensor Systems s. 341 - 346
Hlavní autoři: Nefzi, B., Khan, Dawood, Ye-Qiong Song
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.05.2012
Témata:
Beacon mode
Clock Drift
Clocks
IEEE 802.15 Standards
IEEE802.15.4
Robot sensing systems
Schedules
Synchronization
Wireless sensor network
Wireless sensor networks
ISBN:1467316938, 9781467316934
ISSN:2325-2936
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Shrnutí:IEEE 802.15.4 standard specifies a beacon-enabled mode which provides a synchronization environment using beacon transmissions. However, this mode is designed for single hop networks and its use in multi-hop networks is not straight-forward. The main challenges of using beacon-enabled mode in multi-hop networks are how to efficiently schedule beacon transmissions to avoid direct and indirect beacon collisions and how to make a schedule tolerant to the clock drifts due to the low cost components. In this paper, we present TBoPS, a novel technique for scheduling beacons in the cluster tree topology. TBoPS uses a dedicated period called beacon only period (BOP) to schedule beacons at the beginning of IEEE 802.15.4 super-frame. The advantages of TBoPS is that every beacon-enabled node selects a beacon schedule distributively during association. We analysed the robustness of TBoPS to clock drifts. We also show through simulations that all nodes in the network are synchronized and follow the same super frame structure.
ISBN:1467316938
9781467316934
ISSN:2325-2936
DOI:10.1109/DCOSS.2012.43