Secure method for mtc device triggering

Abstract

Upon receiving a triggering message from a MTC server (20), a network (10) verifies if the MTC server (20) is authorized to trigger a target MTC device (30) and also if the MTC device (30) is authorized to respond the triggering message, by comparing an MTC device ID and MTC server ID (and optionally information on subscription) which are include in the triggering message with authorized ones. Upon succeeding in the verification, the network (10) checks a trigger type included in the triggering message to verify if the triggering message is authorized to be sent to the MTC device (30). Upon succeeding in the check, the network (10) forwards the triggering message to the MTC device (30). The network (10) also validates a response from the MTC device (30), by checking whether the MTC device (30) is allowed to communicate with the addressed MTC server (20).

1 - 52 . (canceled) 
     
     
         53 . A mobile communication system comprising:
 a UE (User Equipment);   a network; and   a server, wherein   the network is configured to:
 receive a trigger request from the server, 
 check that the server is authorised to send the trigger request, 
 deliver a trigger message to the UE when the check is passed, and 
 resend the trigger message to the UE when the delivery fails and a validity time of the trigger message is not expired. 
   
     
     
         54 . The mobile communication system according to  claim 53 , wherein the network is further configured to stop the trigger request from the server when the check fails. 
     
     
         55 . The mobile communication system according to  claim 53 , wherein the UE, which received the trigger message, responds to the server via the network. 
     
     
         56 . The mobile communication system according to  claim 53 , wherein the validity time is a lifetime in the trigger message. 
     
     
         57 . The mobile communication system according to  claim 53 , wherein the trigger message includes subscription information. 
     
     
         58 . A method of a network in a communication system including at least a UE (User Equipment) and a server, the method comprising:
 receiving a trigger request from the server;   checking that the server is authorised to send the trigger request;   delivering a trigger message to the UE when the check is passed; and   resending the trigger message to the UE when the delivery fails and a validity time of the trigger message is not expired.   
     
     
         59 . The method according to  claim 58 , further comprising:
 stopping the trigger request from the server when the check fails.   
     
     
         60 . The method according to  claim 58 , wherein the UE, which received the trigger message, responds to the server via the network. 
     
     
         61 . The method according to  claim 58 , wherein the validity time is a lifetime in the trigger message. 
     
     
         62 . The method according to  claim 58 , wherein the trigger message includes subscription information.