System and method for indicating emergency call back to user equipment
First Claim
Patent Images
1. An apparatus, comprising:
- a user equipment including a processor configured to recognize an Internet Protocol Multimedia Subsystem, IMS, call as an emergency call from a Public Safety Answering Point, PSAP, by an indication that is included in a Session Initiation Protocol, SIP, Invite message,wherein the indication is a string of characters that identifies the PSAP as the source of the emergency call, andwherein the indication is included in a P-Asserted-Identity Header of the SIP Invite message,wherein the user equipment triggers an autonomous action when the user equipment does not receive an input in response to the emergency call within a predefined length of time after the user equipment receives the indication, andwherein the autonomous action is at least one of;
sending an automated message to the PSAP;
sending a location of the user equipment to the PSAP; and
sending an automated message to an emergency-related entity other than the PSAP.
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Abstract
A method is provided for indicating an IMS (Internet Protocol Multimedia Subsystem) emergency call back to a user equipment and an access network. The method comprises including in a message from a PSAP (Public Safety Answering Point) to the user equipment and the access network an indication that the emergency call back is from the PSAP.
21 Citations
7 Claims
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1. An apparatus, comprising:
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a user equipment including a processor configured to recognize an Internet Protocol Multimedia Subsystem, IMS, call as an emergency call from a Public Safety Answering Point, PSAP, by an indication that is included in a Session Initiation Protocol, SIP, Invite message, wherein the indication is a string of characters that identifies the PSAP as the source of the emergency call, and wherein the indication is included in a P-Asserted-Identity Header of the SIP Invite message, wherein the user equipment triggers an autonomous action when the user equipment does not receive an input in response to the emergency call within a predefined length of time after the user equipment receives the indication, and wherein the autonomous action is at least one of; sending an automated message to the PSAP; sending a location of the user equipment to the PSAP; and sending an automated message to an emergency-related entity other than the PSAP. - View Dependent Claims (2, 3)
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4. A method for indicating an Internet Protocol Multimedia Subsystem, IMS, emergency call to a user equipment, comprising:
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including in a Session Initiation Protocol, SIP, Invite message to the user equipment an indication that the emergency call is from a Public Safety Answering Point, PSAP, wherein the indication is a string of characters that identifies to the user equipment the PSAP as the source of the emergency call, and wherein the indication is included in a P-Asserted-Identity Header of the SIP Invite message, wherein the indication triggers an autonomous action by the user equipment when the user equipment does not receive an input in response to the emergency call within a predefined length of time after the user equipment receives the indication, wherein the autonomous action is at least one of; sending an automated message to the PSAP; sending a location of the user equipment to the PSAP; and sending an automated message to an emergency-related entity other than the PSAP. - View Dependent Claims (5, 6)
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7. A system, comprising:
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one or more processors; and instructions that when executed by the one or more processors promote providing an indication in a SIP Invite message to a user equipment that an emergency call is from a Public Safety Answering Point, PSAP, wherein the indication is a string of characters that identifies to the user equipment the PSAP as the source of the emergency call, and wherein the indication is included in a P-Asserted-Identity Header of the SIP Invite message, wherein the indication triggers an autonomous action by the user equipment when the user equipment does not receive an input in response to the emergency call within a predefined length of time after the user equipment receives the indication, and wherein the autonomous action is at least one of; sending an automated message to the PSAP; sending a location of the user equipment to the PSAP; and sending an automated message to an emergency-related entity other than the PSAP.
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Specification