By Jelena Misic, Vojislav B. Misic
Formerly, builders and researchers drawn to the layout, operation, and function of Bluetooth networks have lacked counsel approximately capability solutions and the relative benefits and downsides of functionality ideas.
Performance Modeling and research of Bluetooth Networks: Polling, Scheduling, and site visitors Control summarizes the learn at the functionality of Bluetooth networks, together with either piconets and scatternets, performed because 2001. The publication offers insights into the functionality of Bluetooth networks via an analytical technique established upon queuing idea and discrete occasion simulation. It additionally proposes and validates recommendations for universal difficulties that aren't lined by way of the respectable Bluetooth requisites.
This quantity permits builders and researchers to complement their wisdom of functionality concerns and develop into higher built to resolve difficulties on the topic of the layout, deployment, and operation of Bluetooth networks.
Read or Download Performance modeling and analysis of Bluetooth networks : polling, scheduling, and traffic control PDF
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Extra info for Performance modeling and analysis of Bluetooth networks : polling, scheduling, and traffic control
Each slave is polled in E-limited fashion with up to M frames. Whenever there is a data exchange between the slave and the master, the weight of the slave is increased to the value of MP. On the other hand, when a POLL-NULL sequence occurs, the weight for that particular slave is reduced by one. If the slave weight drops to one (which is the lowest value), the slave has to wait a maximum of MP −1 cycles to be polled again. , 2002], uses both slave reordering and poll rate reduction. The sequence in which slaves will be polled is determined in a pseudo-random fashion at the beginning of every cycle, and less active slaves are not polled for a certain number of slots (not cycles).
There cannot exist a downlink packet without an uplink packet, or vice versa), which means that there are actually two multiple-input single-server queues to consider. , all polls and responses thereto take at least one slot each). , there can be no direct slave-to-slave communication). © 2006 by Taylor & Francis Group, LLC. • 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.
003 burst arrival rate per slave (b) Delay ratios vs. burst arrival rate, B = 5. 5 Performance of exhaustive and 1-limited polling schemes. (From J. Miˇsi´c and V. B. Miˇsi´c, “Modeling Bluetooth piconet performance,” IEEE Comm. Lett. 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].