Coding and behavior when receiving an IMS emergency session indicator from authorized source
First Claim
Patent Images
1. A method in a user equipment (UE), the method comprising:
- maintaining in memory, at the UE, one or more Emergency Service Category (ESC) Values, each ESC Value associated with an Emergency Service Uniform Resource Name (URN), wherein the Emergency Service URN is indicative of a type of emergency service from a plurality of types of emergency services;
receiving at the UE a Session Initiation Protocol (SIP) 380 response message from an Internet Protocol Multimedia (IM) Core Network (CN) Subsystem (IMS) using a first registration, the message including a URN of an emergency service within a Contact header field, the message indicating rejection of an emergency service request from the UE, and the message originated by a Proxy Call Session Control Function (P-CSCF) of the IMS; and
performing one of using a second registration with IMS and originating a call over a Circuit Switched (CS) network, comprising;
when using a second registration, creating the second registration with IMS and sending a SIP request message using the second registration towards a Public Safety Answering Point (PSAP), the SIP request message including the URN of the emergency service and emergency-related information associated with the UE;
when originating a call over a CS network, when the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service associated with an ESC Value as maintained in memory, accessing the CS network and initiating an emergency request message on the CS network indicating the type of emergency service; and
when originating a call over the CS network and the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service not associated with an ESC Value as maintained in memory, accessing the CS network and initiating a CS call request.
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Abstract
A method is provided for a user equipment (UE) to respond to an emergency-related message sent to the UE. The method comprises the UE receiving a first message containing an indicator indicating that an emergency-related request has been made, the UE recognizing the indicator as an indication that the emergency-related request is related to an emergency, and the UE sending a second message containing emergency-related information about itself.
41 Citations
16 Claims
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1. A method in a user equipment (UE), the method comprising:
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maintaining in memory, at the UE, one or more Emergency Service Category (ESC) Values, each ESC Value associated with an Emergency Service Uniform Resource Name (URN), wherein the Emergency Service URN is indicative of a type of emergency service from a plurality of types of emergency services; receiving at the UE a Session Initiation Protocol (SIP) 380 response message from an Internet Protocol Multimedia (IM) Core Network (CN) Subsystem (IMS) using a first registration, the message including a URN of an emergency service within a Contact header field, the message indicating rejection of an emergency service request from the UE, and the message originated by a Proxy Call Session Control Function (P-CSCF) of the IMS; and performing one of using a second registration with IMS and originating a call over a Circuit Switched (CS) network, comprising; when using a second registration, creating the second registration with IMS and sending a SIP request message using the second registration towards a Public Safety Answering Point (PSAP), the SIP request message including the URN of the emergency service and emergency-related information associated with the UE; when originating a call over a CS network, when the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service associated with an ESC Value as maintained in memory, accessing the CS network and initiating an emergency request message on the CS network indicating the type of emergency service; and when originating a call over the CS network and the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service not associated with an ESC Value as maintained in memory, accessing the CS network and initiating a CS call request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment (UE) comprising:
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a component configured such that the UE maintains in memory one or more Emergency Service Category (ESC) Values, each ESC Value associated with an Emergency Service Uniform Resource Name (URN), wherein the Emergency Service URN is indicative of a type of emergency service from a plurality of types of emergency services; receives at the UE a Session Initiation Protocol (SIP) 380 response message from an Internet Protocol Multimedia (IM) Core Network (CN) Subsystem (IMS) using a first registration, the message including a URN of an emergency service within a Contact header field, the message indicating rejection of an emergency service request from the UE, and the message originated by a Proxy Call Session Control Function (P-CSCF) of the IMS; and performs one of using a second registration with IMS and originating a call over a Circuit Switched (CS) network, comprising; when using a second registration, creates the second registration with IMS and sends a SIP request message using the second registration towards a Public Safety Answering Point (PSAP), the SIP request message including the URN of the emergency service and emergency-related information associated with the UE; when originating a call over a CS network, accesses the CS network and, when the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service associated with an ESC Value as maintained in memory, initiates an emergency request message on the CS network indicating the type of emergency service; and when originating a call over the CS network and the URN of the emergency service is an Emergency Service URN indicative of a type of emergency service not associated with an ESC Value as maintained in memory, accesses the CS network and initiates a CS call request. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification