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US 11,096,053 B2Granted
Method for managing session
AssigneeLG Electronics Inc.
InventorsHyunsook Kim, Laeyoung Kim, Myungjune Youn
Life of this patent
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Abstract
A disclosure of the present specification provides a method for processing a NAS request message by an MMF node. The method may comprise the steps of: when it is identified that an NAS request message has been received through a second access network, checking whether a first MM context and a first security context are included therein; and acquiring a second security context from an authentication CP node, and generating a second MM context.
Claims4
A method for processing a non-access-stratum (NAS) request message performed at a mobility management function (MMF) node, the method comprising:
- receiving the NAS request message from a terminal;
- checking which access network the NAS request message from the terminal has been received via;
- checking, when the NAS request message from the terminal is confirmed to have been received via a second access network, whether there are a first mobility management (MM) context and a first security context which have been generated during a previous registration process through a first access network, based on information included in the NAS request message;
- obtaining a second security context, generated during an authentication procedure for the second access network, from an authentication control plane (CP) node;
- generating a second MM context based on at least one of the first MM context and the first security context, and the second security context obtained through the second access network;
- and
- transmitting a response message to the NAS request message to the terminal through a packet data gateway (PDG),
- wherein the terminal creates a plurality of sessions through the first and second access networks,
- wherein the MMF node recognizes the first and second security contexts based on an identifier (ID) of the authentication CP node,
- wherein the terminal is identified by the information contained in the NAS request message, which is a Global Unique Temporary Identity (GUTI),
- wherein the NAS request message further includes information on the authentication CP,
- wherein, if the first MM context is updated based on the second security context, the second security context present in the authentication CP node is released, and
- wherein, the first MM context and the second MM context are created and managed in access units.
10 more elements
A mobility management function (MMF) node comprising:
- a transceiver configured to receive a non-access-stratum (NAS) request message from a terminal;
- and
- a processor configured to check which access network the NAS request message has received via,
- wherein the processor further configured to:
- check, when the NAS request message from the terminal has been received through a second access network, whether there are a first mobility management (MM) context and a first security context which have been generated during a previous registration process through a first access network, based on information included in the NAS request message;
- obtain a second security context, generated during an authentication procedure for the second access network, from an authentication control plane (CP) node;
- and
- generate a second MM context based on at least one of the first MM context and the first security context, and the second security context obtained through the second access network, and
- wherein the transceiver transmits a response message to the NAS request message to the terminal through a packet data gateway (PDG),
- wherein the terminal creates a plurality of sessions through the first and second access networks,
- wherein the MMF node recognizes the first and second security contexts based on an identifier (ID) of the authentication CP node,
- wherein the terminal is identified by the information contained in the NAS request message, which is a Global Unique Temporary Identity (GUTI),
- wherein the NAS request message further includes information on the authentication CP,
- wherein, if the first MM context is updated based on the second security context, the second security context present in the authentication CP node is released, and
- wherein, the first MM context and the second MM context are created and managed in access units.
12 more elements
Dependencies are inferred from the claim text.