Method and apparatus for determining PDU session identity in wireless communication system
First Claim
1. A method for determining, by a session management function (SMF) node, a packet data network (PDU) session identity for one or more PDU sessions of user equipment (UE) in a wireless communication system, the method comprising:
- receiving a request message for requesting an establishment of a PDU session for the UE from an access and mobility management function (AMF) node while the UE performs a handover procedure from a first wireless communication system to a second wireless communication system;
determining a PDU session identity for the PDU session established for the UE when the request message is received; and
sending a response message including the determined PDU session identity to the AMF node in response to the request message,wherein the PDU session identity for the PDU session is determined by combining a specific identity and an identity for locally identifying the PDU session within the SMF node,wherein the specific identity includes a network slice identity to which the SMF node belongs or a globally unique ID allocated to the SMF node.
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Abstract
Disclosed are a method and apparatus for determining a PDU session identity in a wireless communication system. A method for determining, by a session management function (SMF) node, a packet data network (PDU) session identity during handover of user equipment (UE) in a wireless communication system, may include receiving a request message for requesting the establishment of a PDU session for the UE from an access and mobility management function (AMF) node, wherein a handover for the UE from a first wireless communication system to a second wireless communication system has been determined, determining a PDU session identity for the PDU session established for the UE when the request message is received, and sending a response message including the determined PDU session identity to the AMF node in response to the request message.
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Citations
10 Claims
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1. A method for determining, by a session management function (SMF) node, a packet data network (PDU) session identity for one or more PDU sessions of user equipment (UE) in a wireless communication system, the method comprising:
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receiving a request message for requesting an establishment of a PDU session for the UE from an access and mobility management function (AMF) node while the UE performs a handover procedure from a first wireless communication system to a second wireless communication system; determining a PDU session identity for the PDU session established for the UE when the request message is received; and sending a response message including the determined PDU session identity to the AMF node in response to the request message, wherein the PDU session identity for the PDU session is determined by combining a specific identity and an identity for locally identifying the PDU session within the SMF node, wherein the specific identity includes a network slice identity to which the SMF node belongs or a globally unique ID allocated to the SMF node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A session management function (SMF) node for determining a packet data network (PDU) session identity for one or more PDU sessions of user equipment (UE) in a wireless communication system, the SMF node comprising:
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a communication module configured to send or receive a signal; and a processor configured to control the communication module, wherein the processor is configured to; receive a request message for requesting an establishment of a PDU session for the UE from an access and mobility management function (AMF) node while the UE performs a handover procedure from a first wireless communication system to a second wireless communication system, determine a PDU session identity for the PDU session established for the UE when the request message is received, and send a response message including the determined PDU session identity to the AMF node in response to the request message, wherein the PDU session identity for the PDU session is determined by combining a specific identity and an identity for locally identifying the PDU session within the SMF node, wherein the specific identity includes a network slice identity to which the SMF node belongs or a globally unique ID allocated to the SMF node.
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Specification