Communications of the ACM
Studying the Speed of Multi-Hop Bluetooth Networks
Researchers at Spain's UPV/EHU-University of the Basque Country have measured the delays taking place in information transmission over Bluetooth networks.
Credit: University of the Basque Country (Spain)
Researchers at Spain's UPV/EHU-University of the Basque Country have studied the performance of Bluetooth networks and measured the delays taking place in information transmission.
Standard Bluetooth transmissions can work in various ways, one being with node links permanently open, for gathering and transmitting information. In other modes, the nodes switch themselves on and off from time to time when they are not working, which leads to lower energy consumption.
The team also studied the impact of data processing and communication tasks on delays. UPV/EHU's Josu Etxaniz-Maranon performed tests with the platforms and revised the parameters that could affect time performance, such as how the links between nodes work, and the type of data chunk assigned by the standard used for communications. Etxaniz has developed two methodologies for gathering information on the times, and also determined the behavior of some of the support nodes of standard Bluetooth, and how the data processing and communication tasks affect the general delay.
"There isn't the slightest delay when the nodes are permanently on; on the other hand, the delay varied between one hop and another," Etxaniz says.
The delay shows a parabolic trend, and Etxaniz notes information needs to be transmitted quickly and effectively if sensors are to successfully carry out their functions.
From University of the Basque Country (Spain)
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Abstracts Copyright © 2014 Information Inc., Bethesda, Maryland, USA
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