With the increasing demand for mobile network services, users need to realize the seamless handover between different access technologies in the complex heterogeneous networks, so the handover decision scheme with always best connected support and the quality of service has become the key research content of the next generation Internet. In order to satisfy users' demand, a handoff decision scheme is designed based on the fast continuous ant colony algorithm, considering the fuzzy network information, the user quality of service requirement, user preferences, charges that the user is willing to pay and the revenue of the network provider. The knowledge of negotiation game and Nash equilibrium concept are introduced to solve the collusion between users to ensure the fairness of the handoff decision. Simulation results show that the handoff decision scheme designed in this paper can meet the quality of service requirement of the user,maximize the utility of both sides and best fit the user's preference,which has a better performance in solving the always best connected supported handoff decision problem in next generation Internet.