(EN) The present invention relates to a policy-providing device and to a terminal device for supporting a method for changing connections between heterogeneous networks. With respect to the policy-providing device and terminal device according to the present invention, the terminal device accesses one or more networks to use data service. The policy-providing device provides, to the terminal device, a network change policy that recognizes service status information on the terminal device according to the data service, and derives the connection change to the specific network corresponding to the recognized service status information. The terminal device determines whether or not access to the specific network which the terminal device is to access is possible on the basis of the received network change policy, and attempts to access the specific network in order to change the network which the terminal accesses if access is possible.
(ZH) 本发明涉及策略提供设备和用于支持改变异构网络之间的连接的方法的终端装置。针对根据本发明的策略提供设备和终端装置，该终端装置接入一个或更多个网络以使用数据服务。该策略提供设备将网络改变策略提供给该终端装置，该网络改变策略根据数据服务识别关于该终端装置的服务状态信息，并获得到与所识别的服务状态信息对应的特定网络的连接改变。该终端装置基于所接收到的网络改变策略确定是否能够接入该终端装置要接入的特定网络，并尝试接入所述特定网络，以便在能够接入的情况下改变该终端装置接入的网络。