VoLTE call continuing method and system based on pre-paging

The invention relates to a VoLTE call continuing method and system based on pre-paging. The method comprises the steps that: a call initiated by a VoLTE calling terminal is forwarded to a pre-paging server; the pre-paging server initiates paging to a VoLTE called terminal at first; therefore, the called terminal is in an RRC connection state; then, the call is continuously continued to the calledterminal; and thus, communication connection between the calling terminal and the called terminal is completed. The VoLTE call continuing method and system based on pre-paging disclosed by the invention belong to the field of communication; the continuing delay of the VoLTE terminal can be effectively shorted; and thus, the relatively rapid connection speed is provided for users. 种基于预寻呼的VoLTE通话接续方法和系统，方法包括有：VoLTE主叫终端发起的呼叫被转至预寻呼服务器，预寻呼服务器先向VoLTE被叫终端发起寻呼，以使得被叫终端处于RRC连接态，然后再继续将呼叫接续至被叫终端，从而完成主、被叫之间的通信连接。本发明属于通信领域，能有效缩短VoLTE终端接续时延，从而为用户提供更快的接通速度。