蓝牙网络接入点频繁路径选择切换算法

Frequent path selection algorithm of handoff for bluetooth network access point

蓝牙网络接入点切换问题的研究对于解决蓝牙移动性有很重要的现实意义。提出了一种频繁路径选择算法,接入点实时检测同移动点间链路,根据接收功率强度和前一段时间从当前位置切换到相邻接点的概率,确定最佳侯选接入点集,当从当前接入点AP接收到的功率下降到1个阈值时,移动主机MH开始切换。这种算法能够减少不必要的切换,降低链路负荷,而且切换时间较短。

The study of handoff for bluetooth network access point is very important to bluetooth mobility. This paper puts forward a frequent path selection algorithm. The access point supervises the link between itself and mobile point in real time and obtains a set of optimum candidate point according to receiver power and handoff probability from current point to its neighbor point in this algorithm. When the power from current access point （AP） declines to a threshold,the mobile host （MH） is switched to a new access point. This algorithm can reduce unnecessary handoff, cut overload of link and shorten handoff time.