Patent ID: 8219082

Claim:
A roaming communication method, comprising: obtaining a location update reject message sent by a Home Location Register (HLR) of a subscriber to a Visitor Location Register (VLR) of the subscriber; obtaining subscriber data from account information of the subscriber, wherein the subscriber data comprises a local number and subscription information of the subscriber; and simulating the HLR to send the subscriber data to the VLR of the subscriber, so that the subscriber can communicate in a visited network; wherein obtaining the location update reject message sent by the HLR of the subscriber to the VLR of the subscriber comprises: receiving a location update response message sent by the HLR to the VLR and intercepted by a Gateway Mobile Switching Center (GMSC) or an International Signaling Transfer Point (ISTP); and screening out location update reject messages from location update response messages, and sending location update response messages that are not location update reject messages to the VLR.