Patent ID: 7957754
Filing Date: 2011-06-07
Classification: H04M,H04W

Abstract:
1. A method for authenticating a Short Message (SM) calling party, comprising: receiving, by a Signal Relay Function for support of Mobile Number Portability (MNP-SRF) module, a Mobile Originated (MO) SM from a Mobile Switching Center (MSC); obtaining from a Number Portability Database (NPDB) a Number Portability (NP) state of a calling party number carried in the SM; determining according to the NP state whether the calling party number carried in the SM is a mobile number of the MNP_SRF module's home network, when the calling party number carried in the SM is a mobile number of the MNP_SRF module's home network, adding an identifier of the MNP_SRF module's home network to the calling party number; sending, by the MNP_SRF module, the SM to a Short Message Serving Center (SMSC); determining, by the SMSC, whether the calling party number in the SM carries the identifier of the MNP_SRF module's home network, if the calling party number in the SM carries the identifier of the MNP_SRF module's home network, determining that the SM passes calling party authentication; if the calling party number in the SM does not carry the identifier of the MNP_SRF module's home network, determining that the SM fails to pass calling party authentication.