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Energies 2018, 11(5), 1163; https://doi.org/10.3390/en11051163

A Reconfigurable Mesh-Ring Topology for Bluetooth Sensor Networks

1
Zhejiang Industry & Trade Vocational College, Wenzhou 325000, China
2
Department of Electronics Engineering, Chung Hua University, Hsinchu 30012, Taiwan
*
Author to whom correspondence should be addressed.
Received: 2 April 2018 / Revised: 28 April 2018 / Accepted: 2 May 2018 / Published: 7 May 2018
(This article belongs to the Special Issue Wireless Sensor Networks, Internet of Things and Smart Residential)
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Abstract

In this paper, a Reconfigurable Mesh-Ring (RMR) algorithm is proposed for Bluetooth sensor networks. The algorithm is designed in three stages to determine the optimal configuration of the mesh-ring network. Firstly, a designated root advertises and discovers its neighboring nodes. Secondly, a scatternet criterion is built to compute the minimum number of piconets and distributes the connection information for piconet and scatternet. Finally, a peak-search method is designed to determine the optimal mesh-ring configuration for various sizes of networks. To maximize the network capacity, the research problem is formulated by determining the best connectivity of available mesh links. During the formation and maintenance phases, three possible configurations (including piconet, scatternet, and hybrid) are examined to determine the optimal placement of mesh links. The peak-search method is a systematic approach, and is implemented by three functional blocks: the topology formation block generates the mesh-ring topology, the routing efficiency block computes the routing performance, and the optimum decision block introduces a decision-making criterion to determine the optimum number of mesh links. Simulation results demonstrate that the optimal mesh-ring configuration can be determined and that the scatternet case achieves better overall performance than the other two configurations. The RMR topology also outperforms the conventional ring-based and cluster-based mesh methods in terms of throughput performance for Bluetooth configurable networks. View Full-Text
Keywords: bluetooth networks; scatternet formation; topology configuration; routing protocol bluetooth networks; scatternet formation; topology configuration; routing protocol
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, B.-Y.; Yu, C.-M.; Kao, Y.-H. A Reconfigurable Mesh-Ring Topology for Bluetooth Sensor Networks. Energies 2018, 11, 1163.

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