适用于蓝牙匹克网的省电呼吸调度策略MISIP

在深入分析蓝牙的低功耗工作模式-呼吸模式基础上,提出用学习函数来近似估计主从对之间通信流分布。基于观测到的数据猝发到来之间时间间隔,取平均值获得可能的呼吸间隔值;根据缓冲区内滞留数据以及预测的下一次猝发数据流量引入一个代价模型来估量一个从对分配给它的时隙的占用率,从而进一步计算呼吸尝试时隙数,若满足条件将进入呼吸模式。仿真试验表明:相对于蓝牙始终活跃工作方式,该调度策略MISIP(MeanInter-arrival based Sniff Interval Policy)大约减少电源消耗38.6%。

A Sniff Scheduling Policy MISIP for Power Saving in Bluetooth Piconet

After deeply analyzing sniff mode which is a low power operation mode of bluetooth, a learning function is proposed to approximate the distribution of the incoming traffic at a master-|slave pair. Based on the inter-|arrival time of data packets obtained from the learning function, the mean of these inter-|arrival time is the possible sniff interval; according to the backlog packets in the buffer space and forecast next burst data traffic, a cost model is used to approximate the slot occupancy assigned to a slave. Consequently, calculate sniff attempt slots, and go into sniff mode if conditions are satisfied. Finally, computer simulation results validate that the proposed scheduling policy MISIP(Mean Inter-|arrival based Sniff Interval Policy) can save about 38.6% power consumption compared to the always active mode.