System and method for minimizing loss of ip context during irat handover
AssigneeQUALCOMM Incorporated
InventorsSuli Zhao, Ajith T. Payyappilly, Shrawan K. Khatri, Siddharth D. Chitnis
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Abstract
A method for maintaining IP context during an inter RAT handover of a UE between an eHRPD network and an LTE network may include delaying a transfer of an Internet Protocol context for at least one active packet data network until an IP address for an attach (PDN) Packet Data Network has been assigned and in the case where the Internet Protocol address for the Attach Packet Data Network is not assigned, initiating a detach operation from the LTE network without the user equipment losing the Internet Protocol context of the at least one active Packet Data Network.
Claims20
A method for maintaining Internet Protocol context, comprising:
- transferring IP context of at least one active packet data network (PDN) from a first network to a second network after a UE verifies receipt of an IP address of an attach PDN from the second network.
A mobile device configured to communicate with a wireless network, comprising:
- the mobile device configured to transfer IP context of at least one active packet data network (PDN) from a first network to a second network after the mobile device verifies receipt of an IP address of an attach PDN from the second network.
An apparatus comprising:
- a means for initiating an inter-RAT handover on a user equipment between an eHRPD network and an LTE network;
- a means for delaying a transfer of an Internet Protocol context for at least one active packet data network until an Internet Protocol address for an Attach Packet Data Network has been received;
- in a case where the Internet Protocol address for the attach packet data network is not assigned, a means for initiating a detach operation from the LTE network while the user equipment retains the Internet Protocol context of the at least one active Packet Data Network.
A non-transitory computer readable storage media configured to store a program product that, when executed on at least one processor performs a method comprising:
- transferring IP context of at least one active packet data network (PDN) from a first network to a second network after a UE verifies receipt of an IP address of an attach PDN from the second network.
Dependencies are inferred from the claim text.