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Bluetooth is a short-range wireless communication technology for ad-hoc communication between devices, each of which has a range of around 10m. The master typically employs strict round-robin mechanism to poll the slaves in a piconet consisting of a master and up to seven slaves. In this paper we propose a flexible polling mechanism for the master that begins with common polling periods for all slaves and subsequently increases the polling period for slaves with less traffic load. We compare our flexible polling mechanism with strict round-robin polling mechanism and conclude that flexible polling will improve the throughput of the piconet.
Bluetooth is a wireless communication technology that permits communication between bluetooth enabled devices. Bluetooth operates in the ISM band. This band can be very noisy, so bluetooth employs a frequency hopping scheme for modulation. The range of a bluetooth device is around 10m. Bluetooth devices within range can set up an ad-hoc network called a “piconet” with one master that controls the piconet and a maximum of 7 slaves .
The master and a slave communicate using Time Division Duplex (TDD) slots. Typically, though not necessarily, the master talks to the slave in a time-slot (625s) and the slave replies to the master in the very next time-slot, the two consecutive slots where the master and one particular slave communicate with each other is called a “bluetooth frame”. We use the term “metaframe” to denote a number of consecutive bluetooth frames equal to that of the number of slaves in the piconet.
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