Adaptive VoLTE handover mode based on network capability
First Claim
1. A user equipment (UE) for detecting network capability, the UE comprising:
- a memory; and
at least one processor operably connected to the memory, the at least one processor configured to;
identify a preferred mode for a voice over long-term evolution (VoLTE) call handover operation from an LTE network to a non-LTE network;
initiate a VoLTE call on the LTE network;
before the VoLTE call handover operation on the VoLTE call, perform a check to determine whether the LTE network and the non-LTE network are capable of supporting the preferred mode;
change or maintain the preferred mode based on a result of the determination wherein the at least one processor is further configured to;
change the preferred mode to another mode in advance of needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network does not support the preferred mode; and
maintain the preferred mode in advance when needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network supports the preferred mode; and
initiate the VoLTE call handover operation to handover the VoLTE call to the non-LTE network based on the preferred mode.
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Accused Products
Abstract
A method of operating user equipment (UE) for detecting network capability. The method comprises identifying a preferred mode for a voice over long-term evolution (VoLTE) call handover operation from an LTE network to a non-LTE network in a first communication network. The preferred mode is associated with the first communication network. The method further comprises initiating a VoLTE call in a second communication network different than the first communication network, determining whether the second communication network is capable of supporting the preferred mode associated with the first communication network, and one of changing and maintaining the preferred mode based on a result of the determination.
21 Citations
17 Claims
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1. A user equipment (UE) for detecting network capability, the UE comprising:
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a memory; and at least one processor operably connected to the memory, the at least one processor configured to; identify a preferred mode for a voice over long-term evolution (VoLTE) call handover operation from an LTE network to a non-LTE network; initiate a VoLTE call on the LTE network; before the VoLTE call handover operation on the VoLTE call, perform a check to determine whether the LTE network and the non-LTE network are capable of supporting the preferred mode; change or maintain the preferred mode based on a result of the determination wherein the at least one processor is further configured to; change the preferred mode to another mode in advance of needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network does not support the preferred mode; and maintain the preferred mode in advance when needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network supports the preferred mode; and initiate the VoLTE call handover operation to handover the VoLTE call to the non-LTE network based on the preferred mode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of operating user equipment (UE) for detecting network capability, the method comprising:
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identifying a preferred mode for a voice over long-term evolution (VoLTE) call handover operation from an LTE network to a non-LTE network; initiating a VoLTE call on the LTE network; before the VoLTE call handover operation on the VoLTE call, performing a check to determine whether the LTE network and the non-LTE network are capable of supporting the preferred mode; one of changing and maintaining the preferred mode based on a result of the determination, wherein one of changing and maintaining the preferred mode based on a result of the determination comprises; changing the preferred mode to another mode in advance of needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network does not support the preferred mode; and maintaining the preferred mode in advance when needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network supports the preferred mode; and initiating the VoLTE call handover operation to handover the VoLTE call to the non-LTE network based on the preferred mode. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable medium comprising program code, that when executed by at least one processor, causes the at least one processor to:
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identify a preferred mode for a voice over long-term evolution (VoLTE) call handover operation from an LTE network to a non-LTE network; initiate a VoLTE call on the LTE network; before the VoLTE call handover operation on the VoLTE call, performing a check to determine whether the LTE network and the non-LTE network are capable of supporting the preferred mode; change or maintain the preferred mode based on a result of the determination, wherein the program code to change or maintain the preferred mode further comprises program code, that when executed by the at least one processor, causes the at least one processor to; change the preferred mode to another mode in advance of needing to perform the VoLTE call handover operation in response to a response message for the check indicating that a network capability of the LTE network does not support the preferred mode; and maintain the preferred mode in advance when needing to perform the VoLTE call handover operation in response to a response message for the check indicating that the network capability of the LTE network supports the preferred mode; and initiate the VoLTE call handover operation to handover the VoLTE call to the non-LTE network based on the preferred mode. - View Dependent Claims (14, 15, 16, 17)
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Specification