Method and apparatus for assisted emergency calls
AssigneeTelefonaktiebolaget Lm Erisccon (Publ)
InventorsVenkata Ramesh Balabhadruni, Fredrik Lindholm
Life of this patent
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Abstract
A method is provided for use in a communication system that includes a first terminal and an emergency center. The method includes transmitting, by a second terminal, an indicator indicating that emergency service is required for the first terminal, and automatically establishing a call session between the first terminal and the emergency center in response to the indicator.
Claims19
A method in a communication system comprising a first terminal and an emergency center, the method comprising:
- receiving, by a network server in the communication system, an indicator transmitted by a second terminal during a set-up of a call session between the second terminal and the first terminal, the indicator indicating that emergency service is required for the first terminal;
- and
- automatically establishing, by the network server, a conference session between the first terminal and the emergency center in response to receiving the indicator,
- wherein the conference session communicatively connects the first terminal, the second terminal and the emergency center.
A method performed by a first terminal in an IP Multimedia Subsystem (IMS) network, the first terminal comprising a network interface, the method comprising:
- receiving, during a call session between the first terminal and a second terminal, an indicator comprising a first Session Initiation Protocol (SIP) message from the second terminal for establishing a call conference with an emergency center;
- in response to receiving the first SIP message, transmitting via the network interface a second SIP message to a network server of the IMS network indicating that emergency service is required for the first terminal;
- and
- establishing the call session between the first terminal and the emergency center,
- wherein the call session is established as a conference session communicatively connecting the first terminal, the second terminal and the emergency center.
A method performed by a network entity in an IP Multimedia Subsystem (IMS) network comprising an emergency center, the method comprising the steps of:
- receiving over the IMS network from a second terminal, during a set-up of a call session between the second terminal and a first terminal, an indicator comprising a Session Initiation Protocol (SIP) message indicating that emergency service is required for the first terminal;
- and
- in response to receiving the indicator, automatically establishing a conference session between the first terminal and the emergency center,
- wherein the conference session communicatively connects the first terminal, the second terminal and the emergency center.
Dependencies are inferred from the claim text.