Load-adaptive inter-piconet scheduling in small-scale bluetooth scatternets

Liron Har-Shai, Ronen Kofman, Adrian Segall, Gil Zussman

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Bluetooth enables wireless communication via ad hoc networks. The basic topology (piconet) is a collection of slaves controlled by a master. A scatternet is a multihop network of piconets. We anticipate that most scatternets will be composed of only a few piconets. However, even in small scatternets, efficient data flow requires the design of inter-piconet scheduling algorithms. Thus, this article presents and evaluates a load adaptive scheduling algorithm tailored for small-scale scatternets. The main advantage of this algorithm is the use of the Bluetooth low-power hold mode, which allows greater flexibility than other low-power modes. A simulation model has been developed in order to evaluate the performance of the algorithm. We show that the results obtained by the model are very close to the analytic results. Then we evaluate the performance of various intra-piconet scheduling algorithms. Finally, we present simulation results regarding inter-piconet scheduling, and compare the proposed algorithm to algorithms using the sniff mode.

Original languageEnglish
Pages (from-to)136-142
Number of pages7
JournalIEEE Communications Magazine
Issue number7
StatePublished - Jul 2004
Externally publishedYes

Bibliographical note

Funding Information:
This research (no. 148103) was supported by the Israel Science Foundation, by a grant from the Ministry of Science, Israel, and by Intel. We would like to thank Guy Bale, Alon Mahl, and Professor Uri Yechiali.


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