HSDPA service area switching method based on UE

A HSDPA service plot cut method base on UE, including the following steps: RNC configure the relating HSDPA parameter of all the plots that activate and centralize by UE advance for UE; inform RNC to demand carry through the service plot cut and begin to waiting for receive the information from the new service plot if UE find the HSDPA service plot cutting condition satisfy. When downward SRB transmit only map in HS-DSCH, the wireless link between the service plot and UE become scurviness suddenly, UE may send order to RNC, the order of RNC to UE can not ensure to send successfully, base on the HSDPA service plot of the network can not cut normally, but the invention may carry on the normally cut of the HSDPA service plot base on the UE.