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AssigneeApple Inc.
InventorsKrisztian KISS, Rafael L. RIVERA-BARRETO, Rohan C. MALTHANKAR, Vikram Bhaskara YERRABOMMANAHALLI, Xuqiang HUA
Estimating the term…
Apparatus and methods to support handover of emergency services sessions by network elements and by a wireless device between wireless networks are disclosed. The wireless device indicates an emergency services handover to applicable network elements, including an evolved Packet Data Gateway (ePDG), in one more messages when transferring an established emergency services session from a cellular wireless network to an untrusted non-cellular wireless network. In some embodiments, the wireless device includes a predefined string as part of a set of identification data in an IKE_AUTH request message sent to the ePDG. In some embodiments, the wireless device includes a previously allocated IP address within a payload of the IKE_AUTH request message to indicate handover of an existing session. By providing both the predefined “EMERGENCY” string and the previously allocated IP address, the wireless indicates a handover of an emergency services session between wireless networks.
A method to handover an established emergency services session between a 3GPP cellular wireless access network and a non-3GPP wireless access network, the method comprising:
An apparatus configurable for operation in a wireless device, the apparatus comprising:
A wireless device comprising:
Dependencies are inferred from the claim text.