An adaptive power-conserving service discipline for Bluetooth

Bluetooth is a new short-range radio technology to form a small wireless system. In most of the current Bluetooth products, the master polls the slaves in a Round Robin manner and it may waste a significant amount of power. We propose an adaptive power conserving scheme to address this problem. The proposed solution schedules each flow based on its predictive rate and achieves power optimization based on a low-power mode existing in Bluetooth standard. Unlike other research work related to low-power, we also consider QoS of each flow. Theoretical analyses verify that our scheme can achieve throughput guarantees, delay guarantees, and fairness guarantees. Simulation results demonstrate that our scheme can save a significant amount of power compared to the Round Robin scheme and it shows that there exists a tradeoff between power and delay under varies traffic models.