Patent ID: 9338618
Filing Date: 2016-05-10
CPC Classification: H04W

Claim Text:
1. A home routing method in a mobile network comprising a home routing element and a home location register (HLR) or equivalent, the method comprising sending, by a message service center, a routing request to the HLR, with the intention of sending a message to a recipient; receiving, by the home routing element, the routing request; obtaining, by the home routing element, a routing response from the HLR; sending, by the home routing element, a modified routing response to the message service center, said modified routing response including a mobile subscriber international subscriber directory number (MSISDN) for application of a service, and a correlation key; and sending by the message service center or another service center, the message according to the MSISDN provided in the modified routing response; wherein the correlation key is decoupled from a recipient international mobile subscriber identifier (IMSI) but is linked with a recipient MSISDN whereby the recipient MSISDN can be determined from the correlation key, and wherein the correlation key includes a local mobile station identity (LMSI) assigned at random from a larger set of LMSIs dedicated to the recipient MSISDN.