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US 2019/0327110 A1Published application
Wireless communication system
AssigneeSignal Trust for Wireless Innovation
InventorsPrabhakar R. Chitrapu, Narayan Parappil Menon, Fatih M. Ozluturk, Brian Gregory Kiernan
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Abstract
Methods and apparatus for communicating circuit switched voice data with a first cellular radio access network (RAN) and communicating voice over Internet protocol (VoIP) packets using session initiation protocol (SIP) with a second cellular RAN. The second cellular RAN does not support circuit switched voice communication.
Claims10
A user equipment comprising:
- a receiver,
- a transmitter, and
- a processor,
- wherein the receiver, the transmitter, and the processor are configured to cause the user equipment:
- to communicate circuit switched voice data with a first cellular radio access network (RAN);
- and
- to communicate voice over Internet protocol (VoIP) packets using session initiation protocol (SIP) with a second cellular RAN,
- wherein the second cellular RAN does not support circuit switched voice communication.
5 more elements
A method comprising:
- communicating, by a user equipment, circuit switched voice data with a first cellular radio access network (RAN);
- and
- communicating, by the user equipment, voice over Internet protocol (VoIP) packets using session initiation protocol (SIP) with a second cellular RAN,
- wherein the second cellular RAN does not support circuit switched voice communication.
1 more element
Dependencies are inferred from the claim text.