关键词: 虚拟归属环境, 迁移, 增值业务管理器, 用户终端管理器, 代理

Abstract: There is a service transferring problem in the implementation process for mobile terminal, that is how to transfer and provide the service of home network that can not be supported in visited network. A good method is classifying users’ services and transferring services according to their applicability, this method can save the network traffic and reduce response time of the service effectively. There are two exist transferring strategies which are transferring the service at once when the user comes to a visited network and transferring the service only when the user applies for, by comparing with the two strategies in a simulation experiment, the applicability transferring strategy can reduce service response time effectively both when users apply for services centralized and not, it is effective to solve the service transferring problem.

Key words: Virtual Home Environment（VHE）, transfer, Value-Added Service Manager（VASM）, Terminal Service Manager（TSM）, agent