Methods and apparatuses for event monitoring

Abstract

Method and apparatus in which a network exposure node receives, from a server, a first request for monitoring communication failure for at least one terminal device. The network exposure node obtains a connection identity (ID) for identifying a connection between the at least one terminal device and the server, based on the received first request. The network exposure node sends, to a subscriber management node or a policy decision node, a second request for monitoring communication failure for the at least one terminal device. The second request includes the obtained connection ID.

1 . A method implemented at a network exposure node, the method comprising:
 receiving, from a server, a first request for monitoring communication failure for at least one terminal device;   obtaining a connection identity (ID) for identifying a connection between the at least one terminal device and the server, based on the received first request; and   sending, to a subscriber management node or a policy decision node, a second request for monitoring communication failure for the at least one terminal device, wherein the second request includes the obtained connection ID.   
     
     
         2 . The method according to  claim 1 , wherein the first request includes an ID of the server and an ID of the at least one terminal device; and wherein obtaining the connection ID comprises determining the connection ID based on the ID of the server and the ID of the at least one terminal device. 
     
     
         3 . The method according to  claim 2 , wherein the server is a service capability server (SCS) or an application server (AS);
 wherein the ID of the server is an SCS/AS ID, the ID of the at least one terminal device is an external ID or an external group ID, and the connection ID is an access point name (APN); and   wherein each of the first and second requests is a Monitoring Request message.   
     
     
         4 . The method according to  claim 2 , wherein the server is an application function AF; and wherein the ID of the server is an AF ID, the ID of the at least one terminal device is an external ID or an external group ID, and the connection ID is a combination of a data network name, (DNN) and single network slice selection assistance information (S-NSSAI). 
     
     
         5 . The method according to  claim 1 , wherein the connection ID is an internet protocol (IP) domain of a terminal device that is included in the first request;
 wherein obtaining the connection ID comprises extracting the IP domain of the terminal device from the first request; and   wherein each of the first and second requests is a Monitoring Request message.   
     
     
         6 . A method implemented at a subscriber management node, the method comprising:
 receiving, from a network exposure node, a request for monitoring communication failure for at least one terminal device, wherein the request includes a connection identity (ID) for identifying a connection between the at least one terminal device and a server subscribing to the monitoring; and   sending, to a mobility management node or a session management node, an instruction for monitoring communication failure for the at least one terminal device, wherein the instruction includes the connection ID or a second ID, wherein the second ID is associated with the connection ID and identifies the connection between the at least one terminal device and the server.   
     
     
         7 . The method according to  claim 6 , wherein the connection ID is an access point name (APN); and wherein the request is a Monitoring Request message, and the instruction is an Insert Subscriber Data Request message or an Update Location Answer message. 
     
     
         8 . The method according to  claim 6 , wherein the request includes an ID of the at least one terminal device; and wherein the second ID and the session management node are determined by the subscriber management node based on the connection ID and the ID of the at least one terminal device. 
     
     
         9 . The method according to  claim 6 , wherein the connection ID is a combination of a data network name (DNN) and single network slice selection assistance information (S-NSSAI); and wherein the connection is a protocol data unit (PDU) session and the second ID is a PDU session ID. 
     
     
         10 . A method implemented at a mobility management node, the method comprising:
 receiving, from a subscriber management node, an instruction for monitoring communication failure for a terminal device, wherein the instruction includes a connection identity (ID) for identifying a connection between the terminal device and a server subscribing to the monitoring; and   performing a monitoring procedure for the connection identified by the connection ID such that a monitoring report associated with the connection ID is provided to a network exposure node.   
     
     
         11 . The method according to  claim 10 , wherein performing the monitoring procedure comprises:
 monitoring communication failure for the terminal device based on the connection ID; and   sending, to the network exposure node, the monitoring report indicating a result of the monitoring.   
     
     
         12 . The method according to  claim 10 , wherein the connection ID is an access point name APN; and wherein the instruction is an Insert Subscriber Data Request message or an Update Location Answer message. 
     
     
         13 . The method according to  claim 10 , wherein the instruction includes an ID of the terminal device; and
 wherein performing the monitoring procedure comprises:
 determining a second ID and a session management node based on the connection ID and the ID of the terminal device; and 
 sending, to the session management node, a request for monitoring communication failure for the terminal device, wherein the request includes the second ID. 
   
     
     
         14 . The method according to  claim 10 , wherein the connection ID is a combination of a data network name (DNN) and single network slice selection assistance information (S-NSSAI). 
     
     
         15 . The method according to  claim 13 , wherein the connection is a protocol data unit (PDU) session and the second ID is a PDU session ID. 
     
     
         16 . A method implemented at a session management node, the method comprising:
 receiving, from a mobility management node or a subscriber management node, a request for monitoring communication failure for a terminal device, wherein the request includes a second identity (ID) for identifying a connection between the terminal device and a server subscribing to the monitoring; and   performing a monitoring procedure for the connection identified by the second ID such that a monitoring report associated with the second ID is provided to a network exposure node.   
     
     
         17 . The method according to  claim 16 , wherein performing the monitoring procedure comprises:
 monitoring communication failure for the terminal device based on the second ID; and   sending, to the network exposure node, the monitoring report indicating a result of the monitoring.   
     
     
         18 . The method according to  claim 16 , wherein the monitoring report is sent to the network exposure node directly or via the mobility management node. 
     
     
         19 . The method according to  claim 16 , wherein the monitoring report includes failure cause of the communication failure. 
     
     
         20 . The method according to  claim 16 , wherein the connection is a protocol data unit (PDU) session and the second ID is a PDU session ID. 
     
     
         21 . A method implemented at a policy decision node, the method comprising:
 receiving, from a network exposure node, a request for monitoring communication failure for multiple terminal devices, wherein the request includes a connection identity (ID) for identifying connections between the multiple terminal devices and a server subscribing to the monitoring;   identifying, for a terminal device from the multiple terminal devices, a corresponding policy enforcement node and the connection between the terminal device and the server, based on the connection ID; and   performing a monitoring procedure for the identified connection via the corresponding policy enforcement node such that a monitoring report associated with the connection ID is provided to the network exposure node.   
     
     
         22 . The method according to  claim 21 , wherein performing the monitoring procedure comprises:
 initiating an internet protocol (IP)-connectivity access network (CAN) session modification for the identified connection via the corresponding policy enforcement node; and   sending, to the network exposure node, the monitoring report indicating a result of the IP-CAN session modification.   
     
     
         23 . The method according to  claim 21 , wherein the connection ID is an access point name, (APN); and wherein the request is a Monitoring Request message. 
     
     
         24 . A network exposure node, comprising:
 at least one processor; and   at least one memory, the at least one memory containing instructions which, when executed by the at least one processor, cause the network exposure node to:   receive, from a server, a first request for monitoring communication failure for at least one terminal device;   obtain a connection identity (ID) for identifying a connection between the at least one terminal device and the server, based on the received first request; and   send, to a subscriber management node or a policy decision node, a second request for monitoring communication failure for the at least one terminal device, wherein the second request includes the obtained connection ID.   
     
     
         25 . The network exposure node according to  claim 24 , wherein the first request includes an ID of the server and an ID of the at least one terminal device;
 and wherein to obtain the connection ID comprises to determine the connection ID based on the ID of the server and the ID of the at least one terminal device.   
     
     
         26 - 34 . (canceled)