By Jelena Misic, Vojislav B. Misic

Functionality Modeling and research of Bluetooth Networks: Polling, Scheduling, and site visitors keep an eye on summarizes the learn at the functionality of Bluetooth networks, together with either piconets and scatternets, carried out for the reason that 2001. The publication offers insights into the functionality of Bluetooth networks via an analytical technique established upon queueing conception and discrete occasion simulation. It additionally proposes and validates suggestions for universal difficulties that aren't coated by way of the legitimate Bluetooth requisites. This quantity permits builders and researchers to complement their wisdom of functionality concerns and turn into higher outfitted to resolve difficulties on the topic of the layout, deployment, and operation of Bluetooth networks.

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The master does not know the status of queues at the slaves, because there are no provisions for exchange of such information in the Bluetooth packet structure. In fact, the master can request such information from a slave, but the request and response both take time, and the status of other slaves’ queues can change. Therefore, it’s impossible for the master to know the status of all the uplink queues at any given time. As a consequence, the existing results cannot be applied, and the performance of different polling schemes has to be re-assessed, taking the aforementioned characteristics of the Bluetooth communication mechanisms.

7(1):18– 20, c 2003 IEEE. ) Performance comparison We have performed both theoretical analysis as presented in the previous Section, and simulation using the simulator built using the Artifex object-oriented Petri Net simulation engine by RSoft-Design, Inc. , 2003]. We analyzed the piconet with a maximum size of m = 8, with geometrically distributed packet burst size. Mean packet length was L = 3, and p1 = p2 = p3 = 1/3. Analytical results for end-to-end delays as functions of burst arrival rate (which was the same for all slaves, λiu = λ) and mean burst size B are shown in Figs.

Repeatedly sends the inquiry message (also known as the ID packet with a specific inquiry access code (IAC), using a slower frequency hopping pattern through a subset of available RF frequencies. This code may be the general code (GIAC), in which case any device may respond to it, or a dedicated one (DIAC), in which case only the devices that possess the specific capability that corresponds to the used access code may respond. There is a number of possible IAC codes but their meaning is currently unassigned, except for the GIAC which all devices must recognize.

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