蓝牙技术中DRR算法的改进方案和应用

Modified Scheme and Application of DRR Algorithm in Bluetooth Technology

DRR算法是为了解决在路由器中多用户情况下的资源合理分配问题而提出的。由于Bluetooth系统帧长可变以及存在SCO链路时特定的收发时序,使得应用于蓝牙系统上的DRR算法需要作出改进。改进后的算法使得蓝牙主设备可以根据数据流量的变化,进行业务动态规划。文章首先举出蓝牙业务分派中的实际问题,提出了DRR算法的改进方案,然后对方案进行理论分析,最后仿真结果表现了此算法对系统性能的改善。

DRR Algorithm solves the fair-use problem in the routers. Since the variable Bluetooth frame length and the tight scheduling problem in the existence of one SCO link, the DRR algorithm used in BT systems needs to be modified. Using the algorithm, the master in BT systems can dynamically do the scheduling based on the known data rate of BT slaves. This paper gives the problem in thereal BT systems, also advances modified DRR algorithm suited to the Bluetooth applications and analyzes the algorithm. Finally the simulation result shows the verification.