下一代异构无线网络中，垂直切换是保证系统性能的重要手段，切换执行前的网络选择更是研究的重中之重．针对现有异构网络选择算法仅从用户或网络角度考虑，且阻塞率和掉话率较高的问题，文中提出了一种基于非合作博弈的异构网络选择算法，通过综合考虑用户偏好、业务价格和准入代价得到最佳的网络选择方案．该算法从一种新的角度定义网络选择，通过网络间的博弈对用户请求进行分配．仿真结果表明，基于非合作博弈的异构网络选择算法既能获得更低的阻塞率、掉话率，又能实现负载均衡，从而更充分地利用异构网络资源，为更多的用户服务．

In next generation heterogeneous wireless networks,vertical handoff plays an important role in guaran-teeing system performance,and the network selection before vertical handoff execution is a key problem.As theexisting algorithms cannot make users and networks satisfied simultaneously and possess high call blocking rate andcall drop rate,a non- cooperative game theory- based selection algorithm of heterogeneous networks is proposed,which obtains the best network selection scheme by taking into account user preferences,business prices and accesscosts.This algorithm implements network selection from a new perspective,and allocates users' requests throughthe game among member networks.Simulated results show that the proposed algorithm helps not only obtain lowerblo- cking rate and call drop rate but also achieve load balancing,so that it can fully utilize network resources toserve more users.