A Handoff Algorithm Based on Grey Prediction Model for Bluetooth Network
Fangmin Xu · Radio Engineering of China · 2008
The handoff for Bluetooth network access points was a critical problem in constructing a bluetooth network.Special characteristics of bluetooth technology brought great challenges in implementing fast handoff of access points.A handoff algorithm based on grey prediction model for bluetooth network was proposed.The algorithm did not have strict requirements on the quantity and distribution characteristics of samples and needed only a few samples for prediction and made handoff decision.When the predicted value was less than a threshold,the access point searched for an optimal access points set.Then the access point supervised the link quality between the handoff terminal and the access points of the set in real time,and predicted the link quality of next time.When the predicted link quality of the handoff terminal was less than another threshold,the access point selected the optimal access point of the set according to the predicted link quality and finished the handoff procedure.A self-adaptive prediction was implemented to promote the accuracy of predicted results by using of adjusting parameters dynamically.Simulation results show that the handoff delay and probability of inaccuracy handoff has been reduced by using the algorithm.