Network switching method and system based on mobile user position

The invention discloses a network switching method and system based on the position of a mobile user. The network switching method based on the position of the mobile user specifically comprises the following steps: carrying out network scanning; predicting the position of the mobile user to predict the position of the user at the next moment; estimating the received signal strength according to the predicted position of the user at the next moment, and entering a switching trigger mechanism according to the received signal strength; candidate network pre-selection is carried out according to the moving speed of the user and the bandwidth required by the service requested by the user; judging whether the candidate network is unique or not; and if the candidate networks are not unique, performing multi-attribute decision, determining a target network in the candidate networks according to the multi-attribute decision, and switching the network to the target network so as to complete network switching. Accordin