Digital trunked communication network which supports roaming and method thereof

• Main Authors: Xie, Guosheng, Ren, Gang, Wu, Qiang
• Format: Patent
• Language: English
• Published: 17.08.2010

A digital trunked communication network which supports roaming, includes a plurality of trunked communication systems, each of which comprises a base station subsystem and a dispatching subsystem; wherein base station subsystem is used to access various services of a terminal, and to forward trunked service to dispatching subsystem; dispatching subsystem is used to control and manage the trunked service of terminal which locates in its service area, and dispatching subsystems are connected together by IP network. The present invention divides the single control center of existing system into several independent subsystems by employing modularized network organization, thereby making the design and realization of various services clearer and more independent and effectively reducing the complexity of the system and coupling among various services. In addition, the present invention also provides a trunked roaming method which takes the home trunked system as control point in calling layer, thereby ensuring that the system consistently process roaming, non-roaming calls.