Round-robin with FCFS preemption: a simple MAC scheduling scheme for bluetooth piconet
Journal of Mobile Multimedia
An adaptive power-conserving service discipline for bluetooth (APCB) wireless networks
Computer Communications
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Bluetooth has a master-slave configuration, called apiconet. Unspecified in the Bluetooth standard, thelink polling policy adopted by a master may significantly influence the bandwidth utilization of a piconet. Several works have dedicated to this issue[2,3,4,7,8 ]. However, none of them addressesthe asymmetry of traffics between masters and slaves,and the different data packet types provided by Bluetooth are not fully exploited. In this paper, we propose an efficient Pattern Matching Polling (PMP)policy for data link scheduling that properly resolvesthese deficiencies. A polling pattern is a sequenceof Bluetooth packets of di .erent type combinations(e.g.,DH1/DH3/DH5/DM1/DM3/DM5) to be exchanged by a master-slave pair that can properly reflect the traffic ratio (i.e.,asymmetry) of the pair. Byjudiciously selecting a proper polling pattern togetherwith polling times for the link, the precious wirelessbandwidth can be better utilized.The ultimate goalis to reduce the unfilled, or even null, payloads ineach busy slot. In addition, an overflow mechanismis included to handle unpredictable traffic dynamics.Extensive simulations are presented to justify the capability of PMP in handling regular as well as burstytraffics.