METHODS AND DEVICES FOR FACILITATING EMERGENCY CALLS OVER WIRELESS COMMUNICATION SYSTEMS
First Claim
1. A method implemented by a first gateway node for processing an emergency call, comprising:
- receiving an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network, wherein the emergency call request includes an emergency network access identifier constructed by the terminal device;
detecting an event of the emergency call depending upon the emergency network access identifier;
selecting for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and
establishing for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name.
1 Assignment
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Accused Products
Abstract
One embodiment of the present disclosure relates to a method implemented by a first gateway node for processing an emergency call from an untrusted non-3GPP access network. The method comprises: receiving an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network; detecting an event of the emergency call depending upon the emergency network access identifier included in the request message; selecting for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and establishing for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name. According to an aspect of the present disclosure, there are provided corresponding methods and devices.
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Citations
42 Claims
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1. A method implemented by a first gateway node for processing an emergency call, comprising:
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receiving an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network, wherein the emergency call request includes an emergency network access identifier constructed by the terminal device; detecting an event of the emergency call depending upon the emergency network access identifier; selecting for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and establishing for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name. - View Dependent Claims (2, 3, 4)
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5. A method implemented by a terminal device for initiating an emergency call over an untrusted non-3GPP based access network, comprising:
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constructing an emergency network access identifier; sending to a first gateway node an emergency call request including the constructed emergency network access identifier; and establishing, via the first gateway node, an emergency call session with a second gateway node interfacing with an external network providing an emergency call service. - View Dependent Claims (6, 7)
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8. A method implemented by a network node of a 3GPP based access network for facilitating emergency call handover from an untrusted non-3GPP based access network to the 3GPP based access network, comprising:
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receiving a request message sent from a terminal device that is currently performing an emergency call over the untrusted non-3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; detecting an event of the emergency call handover based on the handover indication and the emergency access point name; establishing an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name; and switching the emergency call of the terminal device from a bearer of the untrusted non-3GPP based access network to the to a bearer of the 3GPP based access network. - View Dependent Claims (9, 10)
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11. A method implemented by a network node of a 3GPP based access network for processing an emergency call, comprising:
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receiving an emergency call request initiated from a terminal device over a 3GPP based access network; selecting for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and establishing an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name. - View Dependent Claims (12)
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13. A method implemented by a first gateway node for facilitating emergency call handover from a 3GPP based access network to an untrusted 3GPP based access network, comprising:
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receiving a request message sent from a terminal device that is currently performing an emergency call over the 3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; detecting an event of the emergency call handover based on the handover indication and the emergency network access identifier; and establishing an emergency call session with a second gateway node interfacing with the external network that is identified by the emergency access point name included in the request message. - View Dependent Claims (14, 15, 16)
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17. A first gateway node operably for processing an emergency call, comprising:
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a receiving unit configured to receive an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network, wherein the emergency call request includes an emergency network access identifier constructed by the terminal device; a detecting unit configured to detect an event of the emergency call depending upon the emergency network access identifier; a selecting unit configured to select for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and a session establishing unit configured to establish for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name. - View Dependent Claims (18, 19, 20)
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21. A terminal device operably for initiating an emergency call over an untrusted non-3GPP based access network, comprising:
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an identifier constructing unit configured to construct an emergency network access identifier; a transmitting unit configured to send to a first gateway node an emergency call request including the constructed emergency network access identifier; and a session establishing unit configured to establish, via the first gateway node, an emergency call session with a second gateway node interfacing with an external network providing an emergency call service. - View Dependent Claims (22, 23)
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24. A network node of a 3GPP based access network operably for facilitating emergency call handover from an untrusted non-3GPP based access network to the 3GPP based access network, comprising:
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a receiving unit configured to receive a request message sent from a terminal device that is currently performing an emergency call over the untrusted non-3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; a detecting unit configured to detect an event of the emergency call handover based on the handover indication and the emergency access point name; a session establishing unit configured to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name; and a switching unit configured to switch the emergency call of the terminal device from a bearer of the untrusted non-3GPP based access network to a bearer of the 3GPP based access network. - View Dependent Claims (25, 26)
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27. A network node of a 3GPP based access network operably for processing an emergency call, comprising:
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a receiving unit configured to receive an emergency call request initiated from a terminal device over a 3GPP based access network; a selecting unit configured to select for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and a session establishing unit configured to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name. - View Dependent Claims (28)
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29. A first gateway node operably for facilitating emergency call handover from a 3GPP based access network to an untrusted non-3GPP based access network, comprising:
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a receiving unit configured to receive a request message sent from a terminal device that is currently performing an emergency call over the 3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; a detecting unit configured to detect an event of the emergency call handover based on the handover indication and the emergency network access identifier; and a session establishing unit configured to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the emergency access point name included in the request message. - View Dependent Claims (30, 31, 32)
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33. A first gateway node operably for processing an emergency call, comprising a processor adapted to:
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cause to receive an emergency call request initiated from a terminal device over an untrusted non-3GPP based access network, wherein the emergency call request includes an emergency network access identifier constructed by the terminal device; cause to detect an event of the emergency call depending upon the emergency network access identifier; cause to select for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and cause to establish for the terminal device an emergency call session with a second gateway node interfacing with the external network which is identified by the selected emergency access point name. - View Dependent Claims (34, 38)
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35. A terminal device operably for initiating an emergency call over an untrusted non-3GPP based access network, comprising a processor adapted to:
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cause to construct an emergency network access identifier; cause to send to a first gateway node an emergency call request including the constructed emergency network access identifier; and cause to establish, via the first gateway node, an emergency call session with a second gateway node interfacing with an external network providing an emergency call service. - View Dependent Claims (36)
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37. A network node of a 3GPP based access network for facilitating emergency call handover from an untrusted non-3GPP based access network to the 3GPP based access network, a processor adapted to:
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cause to receive a request message sent from a terminal device that is currently performing an emergency call over the untrusted non-3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; cause to detect an event of the emergency call handover based on the handover indication and the emergency access point name; cause to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name; and cause to switch the emergency call of the terminal device from bearer of the untrusted non-3GPP based access network to the bearer of the 3GPP based access network.
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39. A network node of a 3GPP based access network operably for processing an emergency call, comprising a processor adapted to:
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cause to receive an emergency call request initiated from a terminal device over a 3GPP based access network; cause to select for the terminal device an emergency access point name that identifies an external network providing an emergency call service; and cause to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the selected emergency access point name. - View Dependent Claims (40)
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41. A first gateway node operably for facilitating emergency call handover from a 3GPP based access network to an untrusted non-3GPP based access network, comprising a processor adapted to:
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cause to receive a request message sent from a terminal device that is currently performing an emergency call over the 3GPP based access network, wherein the request message includes a handover indication and an emergency access point name which identifies an external network used to establish the emergency call; cause to detect an event of the emergency call handover based on the handover indication and the emergency network access identifier; and cause to establish an emergency call session with a second gateway node interfacing with the external network that is identified by the emergency access point name included in the request message. - View Dependent Claims (42)
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Specification