Method for terminating voice calls in a wireless communication network

摘要

A method to reduce signalling loads in wireless communication networks in a wireless communication network comprising an IMS (IP Multimedia Subsystem) application server allocated on a server by implementing a new voice call terminating procedure. The method comprises determining whether a Mobile Station Roaming Number (MSRN) is related to a foreign network and, based on this determination, performing a number of operations.

主权项

1. A method for terminating voice calls in a wireless communication network comprising an IP Multimedia Subsystem (IMS) application server allocated on a server comprising the following steps:
sending a Send Routing Information (SRI) MAP operation to a HLR (Home Location server) of a user/user equipment (UE) establishing a voice call to obtain a Mobile Station Roaming Number (MSRN); analysing analyzing the MSRN; determining whether the MSRN is related to a foreign network; and performing the following operations when the MSRN is determined to be related to the foreign network;
obtaining a Mobile Switching Center (MSC) address and a Cell ID of the user by sending an Any Time Interrogation Map (ATI-MAP);routing the voice call to a Circuit Switch (CS) network by prefixing the obtained MSRN;receiving the call in a MSC Server (MSS); androuting the call to an operator corresponding to the MSRN.