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Enhanced Emergency Calls in Mobile Communication Systems

IP.com Disclosure Number: IPCOM000124252D
Published in the IP.com Journal: Volume 5 Issue 5 (2005-05-20)
Included in the Prior Art Database: 2005-May-20
Document File: 1 page(s) / 20K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

In most mobile communication systems, like GSM or UMTS, a priority handling for emergency calls is implemented. This includes for example the possibility of making emergency calls without a valid (U)SIM card. However, so far these emergency calls are voice connections only. Additional valuable information, e.g. about the location of the caller, is not yet used. Therefore, it is proposed to also consider components other than voice and combine them to form an "Enhanced Emergency Call" (EEC), which is then handled as one single call by the networks it traverses. Examples of these additional components are videos or images, which normally are transmitted using other bearers than the voice part of the emergency call (e.g. Packet Switched (PS) bearers with different QoS requirements). Since the EEC should be considered as a single consistent "service", it has to be ensured that components of the EEC don't suffer unnecessary delays. Therefore, it can be necessary to give the PS components of the EEC higher priority than other ongoing speech calls. As long as the first component that has been declared as emergency component has not been terminated, any bearer that is set up afterwards is marked by the terminal and/or the network as additional component. Thus, it is considered part of the EEC and handled as such. When the EEC traverses to a different network, a notification of the nature of the EEC is passed to that network. Furthermore, a timestamp and an indication of the network/operator routing the call is appended to one or all components of the EEC. This is relevant for traceability and associated regulatory requirements.

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Enhanced Emergency Calls in Mobile Communication Systems

Idea: Enric Mitjana, DE-Munich; Martin Oettl, DE-Munich; Meik Kottkamp, DE-Munich

In most mobile communication systems, like GSM or UMTS, a priority handling for emergency calls is implemented. This includes for example the possibility of making emergency calls without a valid
(U)SIM card. However, so far these emergency calls are voice connections only. Additional valuable information, e.g. about the location of the caller, is not yet used.

Therefore, it is proposed to also consider components other than voice and combine them to form an "Enhanced Emergency Call" (EEC), which is then handled as one single call by the networks it traverses. Examples of these additional components are videos or images, which normally are transmitted using other bearers than the voice part of the emergency call (e.g. Packet Switched (PS) bearers with different QoS requirements). Since the EEC should be considered as a single consistent "service", it has to be ensured that components of the EEC don't suffer unnecessary delays. Therefore, it can be necessary to give the PS components of the EEC higher priority than other ongoing speech calls.

As long as the first component that has been declared as emergency component has not been terminated, any bearer that is set up afterwards is marked by the terminal and/or the network as additional component. Thus, it is considered part of the EEC and handled as such. When the EEC traverses to a different network, a notification of the nature of the EEC is passed to that network. Furthermore, a timestamp and an indication of the network/operator routing the call is appended...