Scatternet Formation Protocol for Environmental Monitoring in a Smart Garden

[EN] The monitoring of different parameters in the smart garden environment requires thousands of nodes and actuators. They form a multi-hop communication network. The scatternets formed with Bluetooth protocol is a communication solution. However, there is no current algorithm that considers the different capabilities of the devices (sensors or actuators) and assigns a role according to these capabilities. In this paper, we present a network topology formation algorithm for role assignment and connection establishment which considers the capabilities of the devices and use slave-slave Bridge to communicate the piconets. We design the algorithms needed for this protocol and test it. We have simulated the algorithms in order to evaluate the time needed for role assignment and to establish the first connections of the piconet. The results include different scenarios composed by one or two masters and one to seven slaves. In addition, we evaluate the established connections in piconets and bridges in a real case of the smart garden sensor network. Finally, we present the changes in the piconet connections after the deployment of two nodes in an existing network.This work is partially found by the European Union with the “Fondo Europeo Agrícola de Desarrollo Rural (FEADER) – Europa invierte en zonas rurales”, the MAPAMA, and Comunidad de Madrid with the IMIDRA, under the mark of the PDR-CM 2014-2020” project number PDR18-XEROCESPED. This work has been partially supported by the "Ministerio de Economía y Competitividad" in the "Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia, Subprograma Estatal de Generación de Conocimiento" within the project under Grant TIN2017-84802-C2-1-P. This work has also been partially supported by European Union through the ERANETMED (Euromediterranean Cooperation through ERANET joint activities and beyond) project ERANETMED3-227 SMARTWATIR.Parra-Boronat, L.; Marín, J.; Mauri Ablanque, PV.; Lloret, J.; Torices, V.; Massager, A. (2018). Scatternet Formation Protocol for Environmental Monitoring in a Smart Garden. Network Protocols and Algorithms. 10(3):63-84. https://doi.org/10.5296/npa.v10i3.14122S638410

A Bluetooth Scatternet Formation Algorithm for Networks with Heterogeneous Device Capabilities

This paper focuses on Bluetooth, a promising new wireless technology, developed mainly as a cable replacement. We argue that, in practice, Bluetooth devices will have different power capabilities, classifying them as either high-power or low-power nodes. We propose a deterministic, distributed algorithm that accounts for the physical properties of devices, connecting nodes into a scatternet of small diameter. The proposed protocol results in a high effective throughput and allows components to arrive and leave arbitrarily, dynamically updating the cluster formation. Performance is evaluated through extensive ns-2 simulations