Patent ID: 6223045
Filing Date: 2001-04-24
Classification: H04B,H04W

Abstract:
A method of sending a short data message to a mobile station operating in a radio telecommunications network, said network including a mobile switching center/visitor location register (MSC/VLR) serving the mobile station, said method comprising the steps of:sending the message from a message service center to a paging server associated with the MSC/VLR;storing a copy of the message in the paging server;sending the message from the paging server to the MSC/VLR;making a first attempt to deliver the message from the MSC/VLR to the mobile station via an air interface radio link;sending the message a second time from the message service center to the paging server;determining in the paging server whether the message received the second time has already been sent to the MSC/VLR; anddiscarding by the paging server, the message received the second time upon determining that the message received the second time has already been sent to the MSC/VLR.