To improve the connectivity in mobile wireless sensor networks

an adaptive GTS（guaranteed time slot） allocation algorithm with nodal mobility awareness was proposed.At first

the nodal location in next state was given by Kalman filters forecasting model.Then

a method that considered velocity

direction and relative mobility was used to define mobility level

based on which the nodal priorities for GTS reservation could be determined initially.Subsequently

the priorities could be adjusted adaptively according to the usage status feedback from allocated slots.Finally

the priorities could be used to determine the order for using GTS and the right of use an extra reservation slot.Simulation results show that the proposed scheme could increase the success rate of random access and ensure a lower average packets transmission delay and higher delivery ratio.Furthermore

with the adaptive adjustment scheme for reservation priorities base on usage feedback

the rate of correct utilization of allocated slots is increased significantly in the overall networks.