The third generation mobile communication technology and wireless LAN are required to integrate effectively.In order to have the most effective integration

this paper proposes a new multi-objective decision algorithm based on Vague set.Firstly

this paper proves the uniqueness of the proposed algorithm.Then

according to each parameter value in heterogeneous network and its characteristic

we use different formulas to deal with parameters

and use the proposed algorithm to calculate and simulate data.Finally

the simulation results are compared with those of the traditional fuzzy switching algorithms.By comparing the simulation results

we find that the proposed algorithm is more intelligent

and can effectively reduce the ping-pong effect in a heterogeneous network switch in the integration.