Session context conversion

Abstract

In some example embodiments, there may be provided a method that includes receiving, at a user equipment while being served by a first system and during protocol data unit session establishment or modification procedure, a message including a default quality of service rule, the default quality of service rule including an access point name aggregate maximum bit rate value; and when there is an inter-system change from the first system to the second system, setting, at the user equipment, the access point name aggregate maximum bit rate value of a session management context for the second system to the received access point name aggregate maximum bit rate value received while being served by the first system. Related systems, methods, and articles of manufacture are also described.

1 . A method comprising:
 receiving, at a user equipment while being served by a first system and during protocol data unit session establishment or modification procedure, a message including a default quality of service rule, the default quality of service rule including an access point name aggregate maximum bit rate value;   characterized in that   when there is an inter-system change from the first system to the second system, setting, at the user equipment, an access point name aggregate maximum bit rate value of a session management context for the second system to the received access point name aggregate maximum bit rate value received while being served by the first system.   
     
     
         2 . The method of  claim 1 , wherein the first system comprises a fifth generation core network, wherein the second system comprises a fourth generation evolved packet system, wherein the inter-system change includes a change from an N1 interface to an S1 interface, and wherein the access point name aggregate maximum bit rate value maintains session continuity during the inter-system change. 
     
     
         3 . The method of  claim 1 , wherein the message including the access point name aggregate maximum bit rate value is received from a node in the first system. 
     
     
         4 . The method of  claim 3 , wherein the node comprises a packet data network gateway-control plane function (PGW-C), a session management function (SMF), and/or a packet data network gateway-control plane function co-located with the session management function. 
     
     
         5 . The method of  claim 1  further comprising: storing, at the user equipment, the received default quality of service rule including the access point name aggregate maximum bit rate value session context management associated with the first system. 
     
     
         6 . An apparatus comprising:
 means for receiving, at a user equipment while being served by a first system and during protocol data unit session establishment or modification procedure, a message including a default quality of service rule, the default quality of service rule including an access point name aggregate maximum bit rate value;   characterized in that   when there is an inter-system change from the first system to the second system, means for setting, at the user equipment, an access point name aggregate maximum bit rate value of a session management context for the second system to the received access point name aggregate maximum bit rate value received while being served by the first system.   
     
     
         7 . The apparatus of  claim 6 , wherein the first system comprises a fifth generation core network, wherein the second system comprises a fourth generation evolved packet system, wherein the inter-system change includes a change from an N1 interface to an S1 interface, and wherein the access point name aggregate maximum bit rate value maintains session continuity during the inter-system change. 
     
     
         8 . The apparatus of  claim 6 , wherein the message including the access point name aggregate maximum bit rate value is received from a node in the first system. 
     
     
         9 . The apparatus of  claim 8 , wherein the node comprises a packet data network gateway-control plane function (PGW-C), a session management function (SMF), and/or a packet data network gateway-control plane function co-located with the session management function. 
     
     
         10 . The apparatus of  claim 6 , wherein the apparatus further comprises means to at least:
 store the received default quality of service rule including the access point name aggregate maximum bit rate value session context management associated with the first system.   
     
     
         11 . The apparatus of  claim 6 , wherein the apparatus comprises or is comprised in a user equipment. 
     
     
         12 . A non-transitory computer-readable storage medium comprising program code which when executed by at least one processor causes operations comprising:
 receiving, at a user equipment while being served by a first system and during protocol data unit session establishment or modification procedure, a message including a default quality of service rule, the default quality of service rule including an access point name aggregate maximum bit rate value;   characterized in that   when there is an inter-system change from the first system to the second system, setting, at the user equipment, an access point name aggregate maximum bit rate value of a session management context for the second system to the received access point name aggregate maximum bit rate value received while being served by the first system.   
     
     
         13 .- 25 . (canceled) 
     
     
         26 . The computer-readable storage medium of  claim 12 , wherein the first system comprises a fifth generation core network, wherein the second system comprises a fourth generation evolved packet system, wherein the inter-system change includes a change from an N1 interface to an S1 interface, and wherein the access point name aggregate maximum bit rate value maintains session continuity during the inter-system change. 
     
     
         27 . The computer-readable storage medium of  claim 12 , wherein the message including the access point name aggregate maximum bit rate value is received from a node in the first system. 
     
     
         28 . The computer-readable storage medium of claim  14 , wherein the node comprises a packet data network gateway-control plane function (PGW-C), a session management function (SMF), and/or a packet data network gateway-control plane function co-located with the session management function. 
     
     
         29 . The computer-readable storage medium of  claim 12  further comprising:
 storing, at the user equipment, the received default quality of service rule including the access point name aggregate maximum bit rate value session context management associated with the first system.