The conception of multi-mode reconfigurable terminals (RT) is given.And the basic functional architecture of RT is designed

so that RT could communicate with different kinds of radio access networks (RANs).A scheme for RT selection of RANs and radio access technologies (RATs) is proposed

which is co-operated by RT and RANs.The RT

which is the initiator of connection establishment and link changes

is responsible for processing the information associated with the local wireless environment.Then it transmits the parameters of user requirements to the network.The implement of the above functions is based on the three levels Bayesian Network model for RT’s radio access management.The network

which has the final decision-making right of RATs selection

takes charge of the issues related to the network composition.Finally

computer simulations proved the valid of this scheme.