C.-H. Yang, S.-C. Hsu, and H.-J. Tsai (Taiwan)
Bluetooth, scatternet, QoS, scheduling, routing, PAN
Bluetooth is a short-range, low-cost, wireless technology that can be used to realize personal area networks (PANs). The topology of a PAN is a scatternet, which consists of several star-like piconets interconnecting by means of bridges. In this paper, we present a performance study on scatternet routes. We classify the scatternet routes into four types: single route (SR), multiple routes with single role devices and intersection at masters (MRS-m), multiple routes with single-role devices and intersection at slaves (MRS-s), and multiple routes intersecting at double-role devices (MRD). Our simulation study shows that the performance of SR and MRS-m is better than that of MRS-s and MRD, since the devices at intersections for MRS-s and MRD waste much time in alternating their participation in the piconets that they connect to. Moreover, we briefly present a QoS-aware scheduling that can support QoS on scatternet routes and a crank back routing that can improve the performance of scatternet routes.
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