Handling of interworking with EPC in presence of non-3GPP PDU sessions
First Claim
1. An apparatus, comprising processing circuitry that is configured to:
- connect to a first communication system over a 3GPP access and a non-3GPP access;
switch the connection from the first communication system to a second communication system;
wherein, in a release mode the processing circuitry releases a Protocol Data Unit (PDU) session that is in the first communication system over the non-3GPP access, and in a transfer mode the processing circuitry transfers the PDU session that is in the first communication system over the non-3GPP access to a Packet Data Network (PDN) connection that is in the second communication system over a 3GPP access by;
transferring the PDU session that is in the first communication system over the non-3GPP access to the PDU session that is in the first communication system over the 3GPP access, and then transferring the PDU session that is in the first communication system over the 3GPP access to the PDN connection that is in the second communication system over the 3GPP access;
ortransferring the PDU session that is in the first communication system over the non-3GPP access directly to the PDN connection that is in the second communication system over the 3GPP access.
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Abstract
Aspects of the disclosure can provide an apparatus and method for operating a Protocol Data Unit (PDU) session associated with a non-3GPP access when the apparatus is to perform an inter-system change. The apparatus can include processing circuitry that is configured to connect to a first communication system over a 3GPP access and a non-3GPP access and switch the connection from the first communication system to a second communication system. Further, when in a release mode, the processing circuitry can release a PDU session that is in the first communication system over the non-3GPP access, and when in a transfer mode, the processing circuitry can transfer the PDU session that is in the first communication system over the non-3GPP access to a Packet Data Network (PDN) connection that is in the second communication system over a 3GPP access.
4 Citations
17 Claims
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1. An apparatus, comprising processing circuitry that is configured to:
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connect to a first communication system over a 3GPP access and a non-3GPP access; switch the connection from the first communication system to a second communication system; wherein, in a release mode the processing circuitry releases a Protocol Data Unit (PDU) session that is in the first communication system over the non-3GPP access, and in a transfer mode the processing circuitry transfers the PDU session that is in the first communication system over the non-3GPP access to a Packet Data Network (PDN) connection that is in the second communication system over a 3GPP access by; transferring the PDU session that is in the first communication system over the non-3GPP access to the PDU session that is in the first communication system over the 3GPP access, and then transferring the PDU session that is in the first communication system over the 3GPP access to the PDN connection that is in the second communication system over the 3GPP access;
ortransferring the PDU session that is in the first communication system over the non-3GPP access directly to the PDN connection that is in the second communication system over the 3GPP access. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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connecting, by a processing circuitry of a user equipment (UE), to a first communication system over a 3GPP access and a non-3GPP access; switching the connection from the first communication system to a second communication system; wherein, in a release mode the processing circuitry releases a Protocol Data Unit (PDU) session that is in the first communication system over the non-3GPP access, and in a transfer mode the processing circuitry transfers the PDU session that is in the first communication system over the non-3GPP access to a Packet Data Network (PDN) connection that is in the second communication system over a 3GPP access by; transferring the PDU session that is in the first communication system over the non-3GPP access to the PDU session that is in the first communication system over the 3GPP access, and then transferring the PDU session that is in the first communication system over the 3GPP access to the PDN connection that is in the second communication system over the 3GPP access;
ortransferring the PDU session that is in the first communication system over the non-3GPP access directly to the PDN connection that is in the second communication system over the 3GPP access. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium storing instructions which, when executed by a processor, cause the processor to perform the steps of:
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connecting to a first communication system over a 3GPP access and a non-3GPP access; switching the connection from the first communication system to a second communication system; and in a release mode, releasing a Protocol Data Unit (PDU) session that is in the first communication system over the non-3GPP access, and in a transfer mode, transferring the PDU session that is in the first communication system over the non-3GPP access to a Packet Data Network (PDN) connection that is in the second communication system over a 3GPP access by; transferring the PDU session that is in the first communication system over the non-3GPP access to the PDU session that is in the first communication system over the 3GPP access, and then transferring the PDU session that is in the first communication system over the 3GPP access to the PDN connection that is in the second communication system over the 3GPP access;
ortransferring the PDU session that is in the first communication system over the non-3GPP access directly to the PDN connection that is in the second communication system over the 3GPP access. - View Dependent Claims (14, 15, 16, 17)
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Specification