Method for continuously providing emergency call service through packet network
AssigneeSamsung Electronics Co., Ltd.
InventorsYoungkyo Baek, Sangsoo Jeong, Songyean Cho
Life of this patent
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Abstract
A method and a device for maintaining an emergency call service through a packet network in a mobile communication network are provided. UE using VoLTE receives identification information indicating whether an IMS Voice over PS (VoPS) is supported from a network to determine whether the IMS VoPS of the network is supported, and processes paging for a CS voice call according to the determination result if the emergency call service continues through the packet network.
Claims16
A communication method for a network device that supports a packet-based voice service in a mobile communication system, comprising:
- recognizing that User Equipment (UE) is located, in a Tracking Area (TA) in which the packet-based voice service is not supported on the basis of a message that is received from a Home Subscriber Server (HSS);
- if a call request message for the UE is received, determining whether a VoLTE call or an emergency call for the UE is ongoing;
- and
- if the VoLTE call or the emergency call for the UE is ongoing, selecting a packet switched domain as a domain for the received call request message.
A network device that supports a packet-based voice service in a mobile communication system, comprising:
- a transceiver;
- and
- a controller coupled with the transceiver and configured to control to:
- recognize that User Equipment (UE) is located in a Tracking Area (TA) in which the packet-based voice service is not supported on the basis of a message that is received from a Home Subscriber Server (HSS), determine whether a VoLTE call or an emergency call for the UE is ongoing if a call request message for the UE is received, and select a packet switched domain as a domain for the received call request message if the VoLTE call or the emergency call for the UE is ongoing.
Dependencies are inferred from the claim text.